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.