• ISP update breaks Hermes

    From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 11:37:21 2025
    From Newsgroup: comp.sys.acorn.networking

    My email host provider xencentric hosting updated their servers on
    saturday night from Dovecot 2.3 to 2.4 and in so doing broke Hermes
    pop3 and smptp. The company is suggesting that It's just me and by
    inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've updates
    my machines certs but no improvement.

    I can sometimes pull email using port 110 but with no secure
    connection just APOP but it mostly fails with "Connection lost".

    SMTP is almost none functional for the same reasons and I've swapped
    to using virgin media severs for own domain emails which actually
    works fine.

    What to do?

    I'm not convinced xencentric are bothered about 1 customer, I hope
    I'm wrong.

    My phone and iPad use imap and they're working fine.

    So has email moved past what Hermes can handle now?

    Should I change provider?


    Any suggestions?

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.networking on Wed Jul 23 13:12:44 2025
    From Newsgroup: comp.sys.acorn.networking

    Bob Latham <bob@sick-of-spam.invalid> wrote:
    My email host provider xencentric hosting updated their servers on
    saturday night from Dovecot 2.3 to 2.4 and in so doing broke Hermes
    pop3 and smptp. The company is suggesting that It's just me and by
    inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've updates
    my machines certs but no improvement.

    What are the names of xencentric's POP and SMTP servers? They should be in Hermes settings.

    Theo
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Martin@News03@avisoft.f9.co.uk to comp.sys.acorn.networking on Wed Jul 23 13:21:54 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <ioE*VrdiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:
    My email host provider xencentric hosting updated their servers
    on saturday night from Dovecot 2.3 to 2.4 and in so doing broke
    Hermes pop3 and smptp. The company is suggesting that It's just
    me and by inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've
    updates my machines certs but no improvement.

    What are the names of xencentric's POP and SMTP servers? They
    should be in Hermes settings.

    Do you have no other devices (computers, tablets, phones) that you can
    try? That would confirm whether the problem is with RISC OS or
    xencentric.

    Martin
    --
    Martin Avison
    Note that unfortunately this email address will become invalid
    without notice if (when) any spam is received.
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Hughes@news13@noonehere.co.uk to comp.sys.acorn.networking on Wed Jul 23 13:20:07 2025
    From Newsgroup: comp.sys.acorn.networking

    In message <5c40e29be5bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    My email host provider xencentric hosting updated their servers on
    saturday night from Dovecot 2.3 to 2.4 and in so doing broke Hermes
    pop3 and smptp. The company is suggesting that It's just me and by
    inference that it's Hermes.

    No, it's not you! It's Xencentric's problem. You have already asked this question in the AW List, and the workaround has already been suggested.

    I am on Xencentric with Hermes and it not happening here its there setup.

    I'm getting certificate errors which I can't get passed. I've updates
    my machines certs but no improvement.

    It's their end that is giving the error, Hermes has nothing to do with the certificate error, that comes from AcornSSL module, ensure you are using
    the latest available version. version 1.07 (28 Mar 2025) mbedTLS 3.6.3

    I can sometimes pull email using port 110 but with no secure
    connection just APOP but it mostly fails with "Connection lost".

    That is timeout error. I have already reported that their primary Mail
    server is not responding fast enough to requests

    SMTP is almost none functional for the same reasons and I've swapped
    to using virgin media severs for own domain emails which actually
    works fine.

    Which proves it not your end that is the issue.

    What to do?

    Have you send them a snapshot of the Certificate error message.

    I'm not convinced xencentric are bothered about 1 customer, I hope
    I'm wrong.

    Complain to Neil, and send them a snapshot of the certificate error.

    My phone and iPad use imap and they're working fine.

    So has email moved past what Hermes can handle now?

    NO, It's NOT Hermes! Certificates are handled by the AcornSSL module, not Hermes as Alan Wrigley has already pointed out in the thread on AW mailing list.

    Should I change provider?

    Up to you. I moved my personal domain away from Xencentric awhile ago,
    only have the club's domain still on their servers and might be moving
    them.

    Any suggestions?

    Don't mention RISC OS or Hermes to them, as that is not relevant. Your
    issue is certificate errors and timeout messages (connection lost).

    There are websites out on the web that will analyse your domain including
    the mail servers being used and advising if they are working correctly.
    --
    Chris Hughes
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Hughes@news13@noonehere.co.uk to comp.sys.acorn.networking on Wed Jul 23 13:47:29 2025
    From Newsgroup: comp.sys.acorn.networking

    In message <5c40ec2e60News03@avisoft.f9.co.uk>
    Martin <News03@avisoft.f9.co.uk> wrote:

    In article <ioE*VrdiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:
    My email host provider xencentric hosting updated their servers
    on saturday night from Dovecot 2.3 to 2.4 and in so doing broke
    Hermes pop3 and smptp. The company is suggesting that It's just
    me and by inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've
    updates my machines certs but no improvement.

    What are the names of xencentric's POP and SMTP servers? They
    should be in Hermes settings.

    Do you have no other devices (computers, tablets, phones) that you can
    try? That would confirm whether the problem is with RISC OS or
    xencentric.

    Martin, I use Xencentric for the WROCC domain, and we had the same issue
    about 6 weeks ago and after spending a lot of time investigating it was
    issues with Xencentric's SSL certs, plus their authoritative server being slow to respond which caused the "connection lost" timeouts. They use
    Let's Encrypt SSL certs per customer domain it appears and when we were migrated from one server to another on their system, it broken the SSL
    chain. They eventually fixed those issues. So we do not have the issue.

    Bob has said he has used his phone and tablet via IMAP with the same Xencentric servers and its working.
    --
    Chris Hughes
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 15:55:06 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <ioE*VrdiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:
    My email host provider xencentric hosting updated their servers on
    saturday night from Dovecot 2.3 to 2.4 and in so doing broke Hermes
    pop3 and smptp. The company is suggesting that It's just me and by inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've updates
    my machines certs but no improvement.

    What are the names of xencentric's POP and SMTP servers? They should be in Hermes settings.

    I can't give you what mine is set to because it is based on my domain
    so it would publish my email in effect.
    mail.<>.org.uk
    However, as part of the testing they asked me to try: Server2.xencentrichosting.uk
    Which behaved exactly the same.

    Thanks.

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 15:56:26 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <5c40ec2e60News03@avisoft.f9.co.uk>,
    Martin <News03@avisoft.f9.co.uk> wrote:
    In article <ioE*VrdiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:


    Do you have no other devices (computers, tablets, phones) that you can
    try? That would confirm whether the problem is with RISC OS or
    xencentric.


    All iPads and phones are fine but they use imap not pop3.

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 15:58:21 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <4186ee405c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:

    Martin, I use Xencentric for the WROCC domain, and we had the same
    issue about 6 weeks ago and after spending a lot of time
    investigating it was issues with Xencentric's SSL certs, plus
    their authoritative server being slow to respond which caused the "connection lost" timeouts. They use Let's Encrypt SSL certs per
    customer domain it appears and when we were migrated from one
    server to another on their system, it broken the SSL chain. They
    eventually fixed those issues. So we do not have the issue.

    Bob has said he has used his phone and tablet via IMAP with the
    same Xencentric servers and its working.


    What he said ^^^^

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 16:08:49 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <9204ec405c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c40e29be5bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    My email host provider xencentric hosting updated their servers
    on saturday night from Dovecot 2.3 to 2.4 and in so doing broke
    Hermes pop3 and smptp. The company is suggesting that It's just
    me and by inference that it's Hermes.

    No, it's not you! It's Xencentric's problem.

    Good to know, I think.

    You have already asked this question in the AW List,

    I have yes.

    and the workaround has already been suggested.

    I've not seen that and I've just looked and I've not received that.

    I have been asked a question on there which i'm about to answer.

    I am on Xencentric with Hermes and it not happening here its there
    setup.

    Sorry, I don't understand the logic of that.

    I'm getting certificate errors which I can't get passed. I've
    updates my machines certs but no improvement.

    It's their end that is giving the error, Hermes has nothing to do
    with the certificate error, that comes from AcornSSL module,
    ensure you are using the latest available version. version 1.07
    (28 Mar 2025) mbedTLS 3.6.3

    I am now since Andrew sent it to me a couple of hours ago.

    I can sometimes pull email using port 110 but with no secure
    connection just APOP but it mostly fails with "Connection lost".

    That is timeout error. I have already reported that their primary
    Mail server is not responding fast enough to requests

    SMTP is almost none functional for the same reasons and I've
    swapped to using virgin media severs for own domain emails which
    actually works fine.

    Which proves it not your end that is the issue.

    Well xencentric are telling me their logs say my machine is not
    configured right, they've pointed out some errors. I'm still trying
    to understand it.

    What to do?

    Have you send them a snapshot of the Certificate error message.

    I have.

    I'm not convinced xencentric are bothered about 1 customer, I
    hope I'm wrong.

    Complain to Neil, and send them a snapshot of the certificate error.

    I have.

    My phone and iPad use imap and they're working fine.

    So has email moved past what Hermes can handle now?

    NO, It's NOT Hermes! Certificates are handled by the AcornSSL
    module, not Hermes as Alan Wrigley has already pointed out in the
    thread on AW mailing list.

    i've not seen that and still have not.

    Should I change provider?

    Up to you. I moved my personal domain away from Xencentric awhile
    ago, only have the club's domain still on their servers and might
    be moving them.

    Who to?

    Any suggestions?

    Don't mention RISC OS or Hermes to them, as that is not relevant.
    Your issue is certificate errors and timeout messages (connection
    lost).

    OK.

    There are websites out on the web that will analyse your domain
    including the mail servers being used and advising if they are
    working correctly.

    Thanks.

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Hughes@news13@noonehere.co.uk to comp.sys.acorn.networking on Wed Jul 23 17:28:05 2025
    From Newsgroup: comp.sys.acorn.networking

    In message <5c40fa350fbob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    In article <ioE*VrdiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:
    My email host provider xencentric hosting updated their servers on
    saturday night from Dovecot 2.3 to 2.4 and in so doing broke Hermes
    pop3 and smptp. The company is suggesting that It's just me and by
    inference that it's Hermes.

    I'm getting certificate errors which I can't get passed. I've updates
    my machines certs but no improvement.

    What are the names of xencentric's POP and SMTP servers? They should be in >> Hermes settings.

    I can't give you what mine is set to because it is based on my domain
    so it would publish my email in effect.
    mail.<>.org.uk

    No it won't. They would need your other login details for that.


    However, as part of the testing they asked me to try: Server2.xencentrichosting.uk
    Which behaved exactly the same.

    Yes the mail servers are currently linked to that server.

    Thanks.

    Bob.
    --
    Chris Hughes
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Hughes@news13@noonehere.co.uk to comp.sys.acorn.networking on Wed Jul 23 17:37:07 2025
    From Newsgroup: comp.sys.acorn.networking

    In message <5c40fb7588bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    In article <9204ec405c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c40e29be5bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    My email host provider xencentric hosting updated their servers
    on saturday night from Dovecot 2.3 to 2.4 and in so doing broke
    Hermes pop3 and smptp. The company is suggesting that It's just
    me and by inference that it's Hermes.

    and the workaround has already been suggested.

    I've not seen that and I've just looked and I've not received that.

    The workaround was to switch to using the non-SSL ports. Thus avoiding the
    SSL certificate error. You might get the "Connection Lost" message
    sometimes but that is a different problem.

    I have been asked a question on there which i'm about to answer.

    I am on Xencentric with Hermes and it not happening here its there
    setup.

    Sorry, I don't understand the logic of that.

    I am saying I am using Xencentric Hosting (you get your emails from WROCC
    via them). I am using the SSL Certs and not having any issues.

    I'm getting certificate errors which I can't get passed. I've
    updates my machines certs but no improvement.

    It's their end that is giving the error, Hermes has nothing to do
    with the certificate error, that comes from AcornSSL module,
    ensure you are using the latest available version. version 1.07
    (28 Mar 2025) mbedTLS 3.6.3

    I am now since Andrew sent it to me a couple of hours ago.

    Did you reboot after installing the newer version of AcornSSL ?

    I can sometimes pull email using port 110 but with no secure
    connection just APOP but it mostly fails with "Connection lost".

    That is timeout error. I have already reported that their primary
    Mail server is not responding fast enough to requests

    SMTP is almost none functional for the same reasons and I've
    swapped to using virgin media severs for own domain emails which
    actually works fine.

    Which proves it not your end that is the issue.

    Well xencentric are telling me their logs say my machine is not
    configured right, they've pointed out some errors. I'm still trying
    to understand it.

    What sort of errors?

    What to do?

    Have you send them a snapshot of the Certificate error message.

    I have.

    I'm not convinced xencentric are bothered about 1 customer, I
    hope I'm wrong.

    Complain to Neil, and send them a snapshot of the certificate error.

    I have.

    My phone and iPad use imap and they're working fine.

    So has email moved past what Hermes can handle now?

    NO, It's NOT Hermes! Certificates are handled by the AcornSSL
    module, not Hermes as Alan Wrigley has already pointed out in the
    thread on AW mailing list.

    i've not seen that and still have not.

    It was in his initial response to your post on his mailing list.

    Should I change provider?

    Up to you. I moved my personal domain away from Xencentric awhile
    ago, only have the club's domain still on their servers and might
    be moving them.

    Who to?

    I moved to 20i

    Any suggestions?

    Don't mention RISC OS or Hermes to them, as that is not relevant.
    Your issue is certificate errors and timeout messages (connection
    lost).

    OK.

    There are websites out on the web that will analyse your domain
    including the mail servers being used and advising if they are
    working correctly.

    Thanks.
    --
    Chris Hughes
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 19:18:39 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <128c03415c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c40fb7588bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    I've not seen that and I've just looked and I've not received
    that.

    The workaround was to switch to using the non-SSL ports. Thus
    avoiding the SSL certificate error.

    Yes, eventually I got to that myself, in my plodding way.

    You might get the "Connection Lost" message sometimes but that is a
    different problem.

    In my case it was almost 100% of the time - connection lost.

    Sorry, I don't understand the logic of that.

    I am saying I am using Xencentric Hosting (you get your emails from
    WROCC via them). I am using the SSL Certs and not having any
    issues.

    I'm getting certificate errors which I can't get passed. I've
    updates my machines certs but no improvement.

    It's their end that is giving the error, Hermes has nothing to
    do with the certificate error, that comes from AcornSSL module,
    ensure you are using the latest available version. version 1.07
    (28 Mar 2025) mbedTLS 3.6.3

    I am now since Andrew sent it to me a couple of hours ago.

    Did you reboot after installing the newer version of AcornSSL ?

    I can sometimes pull email using port 110 but with no secure
    connection just APOP but it mostly fails with "Connection lost".

    That is timeout error. I have already reported that their primary
    Mail server is not responding fast enough to requests

    SMTP is almost none functional for the same reasons and I've
    swapped to using virgin media severs for own domain emails which
    actually works fine.

    Which proves it not your end that is the issue.

    Well xencentric are telling me their logs say my machine is not
    configured right, they've pointed out some errors. I'm still trying
    to understand it.

    What sort of errors?

    Complaining about my host name and domain name.



    Who to?

    I moved to 20i

    no issues for RISC OS i take it then.


    Cheers,

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Wed Jul 23 19:24:13 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <73b802415c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c40fa350fbob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    I can't give you what mine is set to because it is based on my
    domain so it would publish my email in effect. mail.<>.org.uk

    No it won't. They would need your other login details for that.

    Publish my email 'address' was what I meant.

    Thanks.

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Chris Hughes@news13@noonehere.co.uk to comp.sys.acorn.networking on Wed Jul 23 21:09:04 2025
    From Newsgroup: comp.sys.acorn.networking

    In message <5c410cd720bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    In article <128c03415c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c40fb7588bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    I've not seen that and I've just looked and I've not received
    that.

    The workaround was to switch to using the non-SSL ports. Thus
    avoiding the SSL certificate error.

    Yes, eventually I got to that myself, in my plodding way.

    You might get the "Connection Lost" message sometimes but that is a
    different problem.

    In my case it was almost 100% of the time - connection lost.


    [snip]



    Well xencentric are telling me their logs say my machine is not
    configured right, they've pointed out some errors. I'm still trying
    to understand it.

    What sort of errors?

    Complaining about my host name and domain name.

    Hmm for email it's mail.<your domain name>.org.uk

    for both SMTP and POP3

    Have you turned on detailed logging on in Hermes for your accounts that
    use Xencentric, as they will show the interaction between your computer
    and their server and might give you more information.

    Who to?

    I moved to 20i

    no issues for RISC OS i take it then.

    Nope.
    --
    Chris Hughes
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Thu Jul 24 08:47:45 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <bdf316415c.chris@mytardis>,
    Chris Hughes <news13@noonehere.co.uk> wrote:
    In message <5c410cd720bob@sick-of-spam.invalid>
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    What sort of errors?

    Complaining about my host name and domain name.

    Hmm for email it's mail.<your domain name>.org.uk
    for both SMTP and POP3

    It is indeed and mine has been set that way for a very long time
    which is why I didn't wish to reveal that full url as it publishes my
    email address.

    Have you turned on detailed logging on in Hermes for your accounts
    that use Xencentric,

    Yes, first thing I did.

    as they will show the interaction between your computer
    and their server and might give you more information.

    The xentric (or whatever its called) people told me my problem is in
    the helo message but having got passed the issues of certificates and
    AcornSSL it is not preventing me posting so I have time to fiddle.

    Their error log tells me to look at certain rfc specs and that tells
    me that the helo needs to be either an ip address in square brackets
    [x.x.x.x] or an FQDN. The logs from Hermes shows that mine is neither
    at the moment. My best efforts to change that in RISC OS not Hermes
    didn't do anything according to Hermes logs. I'm working on it...

    I'm at a loss to understand why the "local domain" field is greyed
    out unless you have "try name server too" ticked. The whole local
    domain thing makes zero sense to me.

    Yes, I do know that Hermes can set the helo for each smtp server it
    connects to and no, I'm not using that feature at the moment.

    I want to experiment to learn more before I decide which path suits
    me best.

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.networking on Thu Jul 24 10:59:24 2025
    From Newsgroup: comp.sys.acorn.networking

    Bob Latham <bob@sick-of-spam.invalid> wrote:
    The xentric (or whatever its called) people told me my problem is in
    the helo message but having got passed the issues of certificates and AcornSSL it is not preventing me posting so I have time to fiddle.

    Their error log tells me to look at certain rfc specs and that tells
    me that the helo needs to be either an ip address in square brackets [x.x.x.x] or an FQDN. The logs from Hermes shows that mine is neither
    at the moment. My best efforts to change that in RISC OS not Hermes
    didn't do anything according to Hermes logs. I'm working on it...

    I'm at a loss to understand why the "local domain" field is greyed
    out unless you have "try name server too" ticked. The whole local
    domain thing makes zero sense to me.

    I think you're conflating two things. The HELO/EHLO is something said
    during the SMTP handshaking - I type 'HELO example.wibble' when connecting
    to the SMTP server:

    $ nc -v Server2.xencentrichosting.uk 25
    Connection to Server2.xencentrichosting.uk (193.35.57.251) 25 port [tcp/smtp] succeeded!
    220 server2.xencentrichosting.uk ESMTP Exim 4.98.2 Thu, 24 Jul 2025 10:46:29 +0100
    HELO example.wibble
    250 server2.xencentrichosting.uk Hello example.wibble [redacted.my.publicip.address]
    QUIT
    221 server2.xencentrichosting.uk closing connection

    That's entirely different from anything set in your machine's IP address
    config for talking to the local network.

    Perhaps Xencentric are deciding that anyone who declares themselves to be a made up name like example.wibble is a spammer and blocking them.

    Yes, I do know that Hermes can set the helo for each smtp server it
    connects to and no, I'm not using that feature at the moment.

    Try using that. Thunderbird sends the string 'ehlo.thunderbird.net' to
    any server (in order to avoid leaking the local IP address): https://support.mozilla.org/en-US/kb/thunderbird-smtp-ehlo

    You could tell Hermes to use the same. At least then it would be identical
    to a popular mail client.


    There's a second issue with Server2.xencentrichosting.uk specifically that
    it's using a self-signed certificate, but I suspect that might be different with the mail.yourdomain.com servers. So may not be relevant in your case.

    Theo
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Thu Jul 24 19:53:01 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <ioE*-diiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    The xentric (or whatever its called) people told me my problem is
    in the helo message but having got passed the issues of
    certificates and AcornSSL it is not preventing me posting so I
    have time to fiddle.

    Their error log tells me to look at certain rfc specs and that
    tells me that the helo needs to be either an ip address in square
    brackets [x.x.x.x] or an FQDN. The logs from Hermes shows that
    mine is neither at the moment. My best efforts to change that in
    RISC OS not Hermes didn't do anything according to Hermes logs.
    I'm working on it...

    I'm at a loss to understand why the "local domain" field is
    greyed out unless you have "try name server too" ticked. The
    whole local domain thing makes zero sense to me.

    I think you're conflating two things. The HELO/EHLO is something
    said during the SMTP handshaking - I type 'HELO example.wibble'
    when connecting to the SMTP server:

    Yes, that is where that issue occurs.

    That's entirely different from anything set in your machine's IP
    address config for talking to the local network.

    I'm confused again.

    Here is what the isp sent to me from their logs...

    2025-07-23 10:46:43 H=dudl [snip details] .virginm.net (iMX6-1)
    [82.34.xx.xx] F=bob@somewhere.org.uk rejected RCPT rcomp@rcomp.co.uk:
    R1: HELO should be a FQDN or address literal (See RFC 2821 4.1.1.1)

    So I looked at the RFC. It says either an ip address in square
    brackets or an FQDN.

    Mine is/was just iMX6-1.

    So my reading of that is it should be either:

    [192.168.1.31] Can't be a WAN address that changes quite a bit and
    it seems to need to specify the machine which the
    Wan address can't do due to NAT. On the other hand
    the LAN address is irrelevant to anything on the
    WAN.
    or
    iMX6-1.somewhere.org.org.uk

    Why can't articles be clear what they mean by IP address !

    Try using that. Thunderbird sends the string
    'ehlo.thunderbird.net' to any server (in order to avoid leaking the
    local IP address):
    https://support.mozilla.org/en-US/kb/thunderbird-smtp-ehlo

    That article suggests its the WAN IP address it's after. Grrrr.

    Sorry but what do you mean by local IP address? Lan or Wan?

    You could tell Hermes to use the same. At least then it would be
    identical to a popular mail client.

    Right so we don't touch the OS settings just the smtp setting in
    Hermes for that account?

    I'll give that a spin over the next day or two. Bit sick of it at the
    moment.

    There's a second issue with Server2.xencentrichosting.uk
    specifically that it's using a self-signed certificate, but I
    suspect that might be different with the mail.yourdomain.com
    servers. So may not be relevant in your case.

    Oh no. Please make it stop !!

    Thanks,

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.networking on Thu Jul 24 22:22:38 2025
    From Newsgroup: comp.sys.acorn.networking

    Bob Latham <bob@sick-of-spam.invalid> wrote:
    In article <ioE*-diiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:
    Bob Latham <bob@sick-of-spam.invalid> wrote:

    I'm confused again.

    Here is what the isp sent to me from their logs...

    2025-07-23 10:46:43 H=dudl [snip details] .virginm.net (iMX6-1)
    [82.34.xx.xx] F=bob@somewhere.org.uk rejected RCPT rcomp@rcomp.co.uk:
    R1: HELO should be a FQDN or address literal (See RFC 2821 4.1.1.1)

    So I looked at the RFC. It says either an ip address in square
    brackets or an FQDN.

    Mine is/was just iMX6-1.

    So my reading of that is it should be either:

    [192.168.1.31] Can't be a WAN address that changes quite a bit and
    it seems to need to specify the machine which the
    Wan address can't do due to NAT. On the other hand
    the LAN address is irrelevant to anything on the
    WAN.
    or
    iMX6-1.somewhere.org.org.uk

    It doesn't really matter. It used to, years ago, but nowadays it's only
    being used by the spam filtering rules as a shibboleth: if you say something silly the server will decide you're a spammer and tell you to go away. As
    long as you say something sensible the server will be happy. What you say
    will appear in the headers of your sent emails but that doesn't mean very
    much.

    eg if I find a mail you sent to the StrongEd mailing list I see this in the headers:

    Received: from dudl....virginm.net ([82.34.xx.xx] helo=iMX6-1)
    by server4.xencentrichosting.uk with esmtpsa (TLS1.2) tls TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
    (Exim 4.98.2)
    (envelope-from <you@yourdomain.com>)
    id <message-id>

    but those header lines are the only place it'll show up.

    Why can't articles be clear what they mean by IP address !

    Try using that. Thunderbird sends the string
    'ehlo.thunderbird.net' to any server (in order to avoid leaking the
    local IP address): https://support.mozilla.org/en-US/kb/thunderbird-smtp-ehlo

    That article suggests its the WAN IP address it's after. Grrrr.

    Sorry but what do you mean by local IP address? Lan or Wan?

    In this particular case Thunderbird are worried about people connecting via
    a VPN to hide their location. If you connect from a VPN provider IP address but say:

    HELO bob.pentagon.mil

    then it's leaked something about where you happen to be, ie the VPN didn't properly hide your location. That's why they just set it to something valid but not real, that's the same for everyone.

    You could tell Hermes to use the same. At least then it would be
    identical to a popular mail client.

    Right so we don't touch the OS settings just the smtp setting in
    Hermes for that account?

    Exactly. It's a mail client setting not a networking setting.

    Theo
    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Bob Latham@bob@sick-of-spam.invalid to comp.sys.acorn.networking on Fri Jul 25 08:47:25 2025
    From Newsgroup: comp.sys.acorn.networking

    In article <koE*hKkiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:

    It doesn't really matter.

    Okay. So to sum up.

    The 'helo' setting for smtp outgoing email must adhere to a
    specification ie. an ip address in square brackets or a fully
    qualified domain name BUT !!! the values in those setting no longer
    matters, it's only the format that matters.

    It is therefore okay to use ehlo.thunderbird.net or similar. I have
    tested that as far as I can and it works but I can't see the server
    logs.

    Best to do this in Hermes smtp settings and not the machines network
    settings. This will prevent your domain being 'published' in that
    setting.

    Have I got it at last?

    Thanks Theo.

    Cheers,

    Bob.

    --- Synchronet 3.21a-Linux NewsLink 1.2
  • From Theo@theom+news@chiark.greenend.org.uk to comp.sys.acorn.networking on Fri Jul 25 16:59:59 2025
    From Newsgroup: comp.sys.acorn.networking

    Bob Latham <bob@sick-of-spam.invalid> wrote:
    In article <koE*hKkiA@news.chiark.greenend.org.uk>,
    Theo <theom+news@chiark.greenend.org.uk> wrote:

    It doesn't really matter.

    Okay. So to sum up.

    The 'helo' setting for smtp outgoing email must adhere to a
    specification ie. an ip address in square brackets or a fully
    qualified domain name BUT !!! the values in those setting no longer
    matters, it's only the format that matters.

    It is therefore okay to use ehlo.thunderbird.net or similar. I have
    tested that as far as I can and it works but I can't see the server
    logs.

    Best to do this in Hermes smtp settings and not the machines network settings. This will prevent your domain being 'published' in that
    setting.

    Have I got it at last?

    Yes, that's all correct.

    Theo
    --- Synchronet 3.21a-Linux NewsLink 1.2