E-Mail-delivery fails

[pilleee]

Hello folks,
I suddenly got a problem with the milter service of plesk. When an email comes in I get the following error:

milter-reject: DATA from a10-217.smtp-out.amazonses.com[54.240.10.217]: 451 4.7.1 Service unavailable - try again later; from=<###> to=<###> proto=ESMTP helo=<a10-217.smtp-out.amazonses.com>
​

I looked to the following document: https://kb.plesk.com/en/120384 but that is a bit confusing because I dont know at all what this milter service does. When I deactivate it in my postfix main.cf file I get a lot of spam, so it seems that spam protection, Grreylisting, and all the other cool stuff wont work anymore, so that may not be the proper solution...

 

[IgorG]

milter-reject: DATA from a10-217.smtp-out.amazonses.com[54.240.10.217]: 451 4.7.1 Service unavailable - try again later; from=<###> to=<###> proto=ESMTP helo=<a10-217.smtp-out.amazonses.com>

But do you have more important part of this error message like

connect to Milter service inet:localhost:12768: Connection refused

before error posted by you? Or, maybe, you have there something else?

 

[pilleee]

This is the complete maillog for one message. In this case, it seems that the greylisting filter blocked this message, right?

May 23 10:26:15 zoomyboy postfix/smtpd[10755]: connect from a10-217.smtp-out.amazonses.com[54.240.10.217]
May 23 10:26:16 zoomyboy postfix/smtpd[10755]: 9AE9E23E280: client=a10-217.smtp-out.amazonses.com[54.240.10.217]
May 23 10:26:16 zoomyboy greylisting filter[10762]: Starting greylisting filter...
May 23 10:26:16 zoomyboy /usr/lib/plesk-9.0/psa-pc-remote[6659]: handlers_stderr: DEFER
May 23 10:26:16 zoomyboy /usr/lib/plesk-9.0/psa-pc-remote[6659]: DEFER during call 'grey' handler
May 23 10:26:16 zoomyboy /usr/lib/plesk-9.0/psa-pc-remote[6659]: Message aborted.
May 23 10:26:16 zoomyboy postfix/smtpd[10755]: 9AE9E23E280: milter-reject: DATA from a10-217.smtp-out.amazonses.com[54.240.10.217]: 451 4.7.1 Service unavailable - try again later; from=<###> to=<###> proto=ESMTP helo=<a10-217.smtp-out.amazonses.com>
May 23 10:26:39 zoomyboy postfix/smtpd[10755]: disconnect from a10-217.smtp-out.amazonses.com[54.240.10.217]

Add: However, If I disable the milter entirely, there's no "Starting greylisting filter..." and the postfix qmgr does his job right after the message comes in.

 

[IgorG]

As possible solution, you can try to rebuild mail handlers with

# plesk repair mail

 

[pilleee]

Repairing the mail server configuration

Reconfigure all domains and mailboxes? [Y/n] Y
Reconfiguring all domains and mailboxes ......................... [OK]

Error messages: 0; Warnings: 0; Errors resolved: 0

Seems that nothing happened. Am I really the only one with that problem?

 

[Luiz Souza]

Hello.

I have a similar problem: Postfix and Dovecot doesn't recognize users from my database.

May 24 14:17:58 plesk01 dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<xxxxx@ihcenter.com.br>, method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=10.240.0.2, session=<vKk1OZczOgDRVaGH>
May 24 14:19:38 plesk01 postfix/smtpd[11884]: NOQUEUE: reject: RCPT from bay004-omc2s9.hotmail.com[65.54.190.84]: 454 4.7.1 <xxxxx@luizsouza.com.br>: Relay access denied; from=<outlook_545D08AAE892198C@outlook.com> to=<xxxxx@luizsouza.com.br> proto=ESMTP helo=<BAY004-OMC2S9.hotmail.com>

I have used the command to reconfigure mail accounts.

What's happening?