Hi, My Setup: Baruwa puppet toaster on CentOS 5
The Problem: external senders are getting a delay DSN on their end. Mail usually comes through to us though. Sometimes it doesn't! What I've found so far: looks like exim is blocking the emails for certain senders. Log files from /var/log/exim/reject.log are littered with host lookup errors as such (names & ip's changed to protect the innocent) 2013-02-17 08:25:49 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check 2013-02-17 08:26:50 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check 2013-02-17 08:27:51 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check 2013-02-17 08:28:52 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check 2013-02-17 08:29:53 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check 2013-02-17 08:30:54 H=(owa.mycustomer.com) [XXX.XXX.XXX.XXX] F=<[email protected]> temporarily rejected RCPT <[email protected]>: host lookup deferred for reverse lookup check (Why every minute? even after the message is delivered?) I've done a reverse dns lookup on the owa.mycustomer.com and found it doesn't exist. I've informed the sender of this. (it now exists) I looked at the exim mailing lists for similiar problems/resolutions and did find similar issues with the resolution being adding the ip to a whitelist. So I'd like to do this. I looked into the config files /etc/exim/exim.conf but the first line says: # File Managed by Puppet Now, not being versed in Puppet or exim I'm at a loss where to whitelist this ip. Plus, in the config I don't find any reference to reverse lookup error as noted above. Config is at http://pastebin.com/3rhFdEYE <http://pastebin.com/3rhFdEYE> Any help would be appreciated. Thank you! Best Regards, Mike ----- Best Regards, Mike -- View this message in context: http://baruwa-users-list.963389.n3.nabble.com/Exim-host-lookup-deferred-tp4026120.html Sent from the Baruwa users list mailing list archive at Nabble.com. _______________________________________________ Keep Baruwa FREE - http://pledgie.com/campaigns/12056
