Issue maillog - cannot get sender domain

[RuiCadete]

Hello,

I am getting in some messages the cannot get sender domain in the mail log. This leads to spamassassin to fail and the email is delivered skipping the spamassassin checks. witch is very annoying. Does anyone has this same problem?

• plesk Onyx 17.8.11
• dovecot 2.3.0.1-centos7.18031217
• dovecot-pigeonhole 0.5.0.1-centos7.18031217
• postfix 2.10.1-7.el7
• spamassassin 3.4.0-4.el7_5

Maillog:

Jan 29 11:51:55 LCSrv02 postfix/smtpd[29199]: A92534369AA: client=unknown[122.128.107.244]
Jan 29 11:51:55 LCSrv02 postfix/cleanup[29143]: A92534369AA: message-id=<[email protected]>
Jan 29 11:51:55 LCSrv02 /usr/lib64/plesk-9.0/psa-pc-remote[28624]: handlers_stderr: SKIP
Jan 29 11:51:55 LCSrv02 /usr/lib64/plesk-9.0/psa-pc-remote[28624]: SKIP during call 'limit-out' handler
Jan 29 11:51:55 LCSrv02 check-quota[31172]: cannot get sender domain
Jan 29 11:51:55 LCSrv02 check-quota[31172]: Unable to intialize check-quota mail handler
Jan 29 11:51:55 LCSrv02 /usr/lib64/plesk-9.0/psa-pc-remote[28624]: Error during 'check-quota' handler
Jan 29 11:51:56 LCSrv02 postfix/qmgr[28991]: A92534369AA: from=<>, size=4152, nrcpt=1 (queue active)
Jan 29 11:51:56 LCSrv02 postfix-local[31173]: postfix-local: from=MAILER-DAEMON, to=[email protected], dirname=/var/qmail/mailnames
Jan 29 11:51:56 LCSrv02 spamassassin[31174]: cannot get sender domain
Jan 29 11:51:56 LCSrv02 spamassassin[31174]: Unable to intialize spamassassin mail handler
Jan 29 11:51:56 LCSrv02 postfix-local[31173]: Error during 'spam' handler
Jan 29 11:51:56 LCSrv02 postfix/smtpd[29199]: disconnect from unknown[122.128.107.244]
Jan 29 11:51:56 LCSrv02 dovecot: service=lda, user=[email protected], ip=[]. msgid=<[email protected]>: saved mail to INBOX
Jan 29 11:51:56 LCSrv02 postfix/pipe[29195]: A92534369AA: to=<[email protected]>, relay=plesk_virtual, delay=0.66, delays=0.42/0/0/0.24, dsn=2.0.0, status=sent (delivered via plesk_virtual service)
Jan 29 11:51:56 LCSrv02 postfix/qmgr[28991]: A92534369AA: removed

Thank you in advance,
Rui Cadete

 

[Martin Dias]

Check this topic maybe it can help:
Resolved - cannot get sender domain

Additionally:
This error means that the email was not properly formed and the SMTP MAIL FROM: does not contain domain part after @. Such a situation is usually observed when emails are sent by a script: automatic notifications by OS services, "contact us" forms on websites and so on.

 

[RuiCadete]

Thanks Arashi,

I believe that the link you gave me was for sending email... My problem is receiving. I think someone is sending SPAM from another server using my email in the FROM, then I receive the fail notifications.

This is an example of the header of an email with the problem that I have received. I don´t see any error after @... Where from is the sender domain picked from? I anso see mailnull... is this ok?

Return-Path: <MAILER-DAEMON>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: from host.reholi.com (unknown [122.128.107.244])
by LCSrv02.myemailserver.com (Postfix) with ESMTPS id A92534369AA
for <[email protected]>; Tue, 29 Jan 2019 11:51:55 +0000 (GMT)
Received: from mailnull by host.reholi.com with local (Exim 4.87)
id 1goRvk-0000YW-Tv
for [email protected]; Tue, 29 Jan 2019 17:51:52 +0600
X-Failed-Recipients: [email protected]
Auto-Submitted: auto-replied
From: Mail Delivery System <[email protected]>
To: e[email protected]
Content-Type: multipart/report; report-type=delivery-status; boundary=1548762712-eximdsn-915171973
MIME-Version: 1.0
Subject: Mail delivery failed: returning message to sender
Message-Id: <[email protected]>
Date: Tue, 29 Jan 2019 17:51:52 +0600
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - host.reholi.com
X-AntiAbuse: Original Domain - xxxxxx.com
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain -
X-Get-Message-Sender-Via: host.reholi.com: sender_ident via received_protocol == local: mailnull/primary_hostname/system user
X-Authenticated-Sender: host.reholi.com: mailnull
X-Source:
X-Source-Args:
X-Source-Dir:

--1548762712-eximdsn-915171973
Content-type: text/plain; charset=us-ascii

This message was created automatically by mail delivery software.


Thanks!

 

[Bitpalast]

I think that the problem could be fixed by applying



in the mail server settings. The reason for it is that when the domain cannot be resolved, SPF will fail, and when SPF fails, the mail won't be delivered in this setting.

 

[RuiCadete]

Hello Peter,

I will give it a try. It makes sense.

Thanks!
Regards.