Voytek: > I have a small Postfix/Dovecot virtual server, low usage > every so often a user account get compromised and spam sent (like couple > of days ago), now I'm seeing 5 or 6 emails 'stuck' in the queue with like: > > (host mail2.abcdef.com[217.xx.xx.xx] refused to talk to me: > 554-mail1.abcdef.com 554 Your access to this mail system has been rejected > due to the sending MTA's poor reputation. If you believe that this failure > is in error, please contact the intended recipient via alternate means.)
Stuck in the queue with a 5xx (hard reject) reply? > the single rbl has been already contacted, and, removed my IP, mxtoolbox > shows NO blacklists, I guess 'poor reputation' will persist for a day or > more > > so, the question is can I set up a 'spare' mail server, in future cases > when I end up for a day or longer with bad reputation, to switch to an > alternate outbound smtp server... ? does it make sense..? would it work? > (trying to plan ahead from behind) There is smtp_fallback_relay, but that is normally used for delivery to slow destinations, not destinations that hard-reject email. Wietse