From Newsgroup: comp.mail.sendmail

I am getting these emails in my mailbox I think because I am the
MAILER-DAEMON alias. The mail doesn't get sent because in this case the
host is unknown. What I don't know is who sent this and how did it get
into the mail server? There are hundreds of emails in the log to this
domain. There are multiple users on this server and I'm not sure how to
tell who sent the email. I want to put a stop to it but not sure what
to do here. Any help would be appreciated. More below the email -->

------------------------------------------------------------------------------- The original message was received at Sat, 5 Sep 2026 06:20:45 GMT
from localhost
with id 6856KjcO2840606

----- The following addresses had permanent fatal errors ----- <treasurerff@44pf.com>

----- Transcript of session follows -----
550 5.1.2 <treasurerff@44pf.com>... Host unknown (Name server:
mail.44pf.com.: host not found)


Reporting-MTA: dns; n6ov.org
Arrival-Date: Sat, 5 Sep 2026 06:20:45 GMT

Final-Recipient: RFC822; treasurerff@44pf.com
X-Actual-Recipient: rfc822; treasurerff@44pf.com
Action: failed
Status: 5.1.2
Remote-MTA: DNS; mail.44pf.com
Last-Attempt-Date: Thu, 10 Sep 2026 02:13:41 GMT


Return-Path: <MAILER-DAEMON>
Received: from localhost (localhost)
by n6ov.org (8.18.1/8.18.1/Debian-6) id 6856KjcO2840606;
Sat, 5 Sep 2026 06:20:45 GMT
Date: Sat, 5 Sep 2026 06:20:45 GMT
From: Mail Delivery Subsystem <MAILER-DAEMON>
Message-Id: <202609050620.6856KjcO2840606@n6ov.org>
To: <treasurerff@44pf.com>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="6856KjcO2840606.1788589245/n6ov.org"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure) ------------------------------------------------------------------------------

Here is a sample chunk of my log.

6868EAqV2944528: to=<TeslaCompany@welcome.com>, delay=2+06:19:32, xdelay=00:02:16, mailer=esmtp, pri=29370000, relay=welcome.com.
[3.33.139.32], dsn=4.4.1, stat=Deferred: Connection timed out with welcome.com.
685C5fhS2863542: to=<presidentogxryoix@44pf.com>, delay=3+02:28:01, xdelay=00:00:00, mailer=esmtp, pri=40260000, relay=mail.44pf.com. [199.244.51.121], dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
685AqMGo2858702: to=<vphcbaox@44pf.com>, delay=3+03:41:20,
xdelay=00:00:00, mailer=esmtp, pri=40890000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
6856KjcO2840606: to=<treasurerff@44pf.com>, delay=3+08:12:57, xdelay=00:00:00, mailer=esmtp, pri=43320000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
6882j5IB3114461: to=<service.funds@secure.net>, delay=11:56:22, xdelay=00:02:15, mailer=esmtp, pri=6510000, relay=mail.secure.net. [161.58.2.116], dsn=4.4.1, stat=Deferred: Connection timed out with mail.secure.net.
6868EAqV2944528: to=<TeslaCompany@welcome.com>, delay=2+06:29:32, xdelay=00:02:15, mailer=esmtp, pri=29460000, relay=welcome.com.
[3.33.139.32], dsn=4.4.1, stat=Deferred: Connection timed out with welcome.com.
685C5fhS2863542: to=<presidentogxryoix@44pf.com>, delay=3+02:38:01, xdelay=00:00:00, mailer=esmtp, pri=40350000, relay=mail.44pf.com. [199.244.51.121], dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
685AqMGo2858702: to=<vphcbaox@44pf.com>, delay=3+03:51:20,
xdelay=00:00:00, mailer=esmtp, pri=40980000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
6856KjcO2840606: to=<treasurerff@44pf.com>, delay=3+08:22:57, xdelay=00:00:00, mailer=esmtp, pri=43410000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
6882j5IB3114461: to=<service.funds@secure.net>, delay=12:06:22, xdelay=00:02:15, mailer=esmtp, pri=6600000, relay=mail.secure.net. [161.58.2.116], dsn=4.4.1, stat=Deferred: Connection timed out with mail.secure.net.
6868EAqV2944528: to=<TeslaCompany@welcome.com>, delay=2+06:39:32, xdelay=00:02:15, mailer=esmtp, pri=29550000, relay=welcome.com.
[3.33.139.32], dsn=4.4.1, stat=Deferred: Connection timed out with welcome.com.
685C5fhS2863542: to=<presidentogxryoix@44pf.com>, delay=3+02:48:01, xdelay=00:00:00, mailer=esmtp, pri=40440000, relay=mail.44pf.com. [199.244.51.121], dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
685AqMGo2858702: to=<vphcbaox@44pf.com>, delay=3+04:01:20,
xdelay=00:00:00, mailer=esmtp, pri=41070000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.
6856KjcO2840606: to=<treasurerff@44pf.com>, delay=3+08:32:57, xdelay=00:00:00, mailer=esmtp, pri=43500000, relay=mail.44pf.com.,
dsn=4.4.1, stat=Deferred: Connection refused by mail.44pf.com.

My LogLevel is 9. I just reset it to 12 to maybe see some more information.

This is the source from the above email:

X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
Return-Path: <MAILER-DAEMON>
Received: from localhost (localhost)
by n6ov.org (8.18.1/8.18.1/Debian-6) id 68A29DUi3304187;
Thu, 10 Sep 2026 02:13:41 GMT
Date: Thu, 10 Sep 2026 02:13:41 GMT
From: Mail Delivery Subsystem <MAILER-DAEMON>
Message-Id: <202609100213.68A29DUi3304187@n6ov.org>
To: postmaster
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="68A29DUi3304187.1789006421/n6ov.org"
Subject: Postmaster notify: see transcript for details
Auto-Submitted: auto-generated (postmaster-notification)

This is a MIME-encapsulated message

--68A29DUi3304187.1789006421/n6ov.org

The original message was received at Sat, 5 Sep 2026 06:20:45 GMT
from localhost
with id 6856KjcO2840606

----- The following addresses had permanent fatal errors ----- <treasurerff@44pf.com>

----- Transcript of session follows -----
550 5.1.2 <treasurerff@44pf.com>... Host unknown (Name server:
mail.44pf.com.: host not found)

--68A29DUi3304187.1789006421/n6ov.org
Content-Type: message/delivery-status

Reporting-MTA: dns; n6ov.org
Arrival-Date: Sat, 5 Sep 2026 06:20:45 GMT

Final-Recipient: RFC822; treasurerff@44pf.com
X-Actual-Recipient: rfc822; treasurerff@44pf.com
Action: failed
Status: 5.1.2
Remote-MTA: DNS; mail.44pf.com
Last-Attempt-Date: Thu, 10 Sep 2026 02:13:41 GMT

--68A29DUi3304187.1789006421/n6ov.org
Content-Type: text/rfc822-headers

Return-Path: <MAILER-DAEMON>
Received: from localhost (localhost)
by n6ov.org (8.18.1/8.18.1/Debian-6) id 6856KjcO2840606;
Sat, 5 Sep 2026 06:20:45 GMT
Date: Sat, 5 Sep 2026 06:20:45 GMT
From: Mail Delivery Subsystem <MAILER-DAEMON>
Message-Id: <202609050620.6856KjcO2840606@n6ov.org>
To: <treasurerff@44pf.com>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="6856KjcO2840606.1788589245/n6ov.org"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

--68A29DUi3304187.1789006421/n6ov.org--
--

Knute Johnson

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