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?
--Doc Savage
Fairview Heights, IL