451 4.7.1 Service unavailable Problem with greylisting

[SalvadorS]

Hello,

Suddenly my server stop to accept mail from outside. Here you have the logs of mail.info

Feb 20 14:26:02 xxx postfix/smtpd[5581]: 17098E1CCB: milter-reject: DATA from mail2.email-o-matic.com[217.116.24.xxx]: 451 4.7.1 Service unavailable - try again later; from=<empresas@xxx.es> to=<whatever@whatwever.es> proto=ESMTP helo=<mail2.email-o-matic.com>

It seems it is a milter problem as in the line I can read "milter-reject"

Also I have a lot of lines like this:

Feb 20 14:27:34 dv2 greylisting filter[9152]: Starting greylisting filter...
Feb 20 14:27:36 dv2 greylisting filter[9154]: Starting greylisting filter...
Feb 20 14:27:37 dv2 greylisting filter[9165]: Starting greylisting filter...

I can go to control panel and stop plesk milter but I see these lines on mail.info

Feb 20 14:30:04 xxx postfix/smtpd[8845]: warning: connect to Milter service inet:127.0.0.1:12768: Connection refused

And 4.7.1 still there

Feb 20 14:30:03 xxx postfix/smtpd[7289]: NOQUEUE: milter-reject: CONNECT from 223.179.15.xx.dynamic.jazztel.es[37.15.179.xx]: 451 4.7.1 Service unavailable - try again later; proto=SMTP

Any ideas?

Maybe is a port (12768) connection error? How I can test that port?

UPDATE

This KB article does not solve anything as the load of the server is 0.1-0.5 http://kb.parallels.com/114982

A temporal fix is to edit /etc/postfix/main.cf file comment these two lines:

smtpd_milters = , inet:127.0.0.1:12768
non_smtpd_milters = , inet:127.0.0.1:12768

And restart postfix (/etc/init.d/postfix restart)

But I want to know if somebody can told us a permanent fix to the issue as it seems more people is facing it http://forum.parallels.com/showthread.php?264409-Postfix-Queue-Problem

Regards

 

[BobClaas]

Well, you're not the only one...and this is not the only thread.
Its been a problem with Milter for a long time now.

I'm hoping Plesk 12 doenst have these issues.

 

[Erdem_Ece]

any solution to this please? milter-reject: DATA from 451 4.7.1 Service unavailable - try again later

getting this error and KB articles is not helping!!!!!

thanks.

 

[abdi]

My understanding is that the milter-reject (sendmail) service is NOT running! You can actually telnet localhost 12768 and you won't get any response. Therefore restart the respective service and this should resolve the problem at hand. Also ensure that your /usr/sbin/sendmail is intact

 

[abdi]

Have you also already look at this:
http://kb.odin.com/en/120384