[CentOS] Fail2ban mail failures ???

[Александр Кириллов]

Robert G. (Doc) Savage писал 2014-12-26 20:39:
> I'm using fail2ban with CentOS 6.6. Something is causing fail2ban's
> alerts sent to root's mail to be rejected. Here's a clip from one of 
> the
> error messages:
> 
> 
>         Message 48:
>         From MAILER-DAEMON at lion.protogeek.org  Sun Dec 21 03:09:20 2014
>         Return-Path: <MAILER-DAEMON at lion.protogeek.org>
>         Date: Sun, 21 Dec 2014 03:09:19 -0600
>         From: Mail Delivery Subsystem 
> <MAILER-DAEMON at lion.protogeek.org>
>         To: postmaster at lion.protogeek.org
>         Content-Type: multipart/report; report-type=delivery-status;
>         	boundary="sBL97EKS003880.1419152959/lion.protogeek.org"
>         Subject: Postmaster notify: see transcript for details
>         Auto-Submitted: auto-generated (postmaster-notification)
>         Status: R
> 
>         Part 1:
> 
>         The original message was received at Tue, 16 Dec 2014 03:09:17
>         -0600
>         from localhost
>         with id sBG97E83025627
> 
>            ----- The following addresses had permanent fatal errors
>         -----
>         <fail2ban at example.com>
> 
>            ----- Transcript of session follows -----
>         <fail2ban at example.com>... Deferred: Connection timed out with
>         example.com.
>         Message could not be delivered for 5 days
>         Message will be deleted from queue
>         ..........
> 
> 
> 
> I used to get the messages that are now being deleted after five days.
> Any suggestions?

Check your /etc/fail2ban/jail.local /etc/fail2ban/jail.conf.
You have to provide valid email addresses for dest= and sender= 
parameters in sendmail-whois or mail-whois actions for enabled jails.