[courier-users] DNS problems with courier 0.63
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[courier-users] DNS problems with courier 0.63
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From: Chuck W. <ma...@gm...> - 2010-01-28 03:51:26
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> Hi All,<br> <br> I recently upgraded my debian server from courier 0.61 to 0.63 and am now having strange problems associated with courier's use of DNS.<br> <br> I have always run with BOFHCHECKDNS=1 (the default) without issue. However, after upgrading all domains were rejected in both inbound and outbound smtp mail. Examples:<br> <br> <pre wrap="">Jan 25 07:58:25 aloha courieresmtp: id=00000000032E4D3E.000000004B5D8509.00000D76,from=<a class="moz-txt-link-rfc2396E" href="mailto:logcheck@*manawiz.com*"><log...@ma...></a>,addr=<a class="moz-txt-link-rfc2396E" href="mailto:ma...@gm..."><ma...@gm...></a>: DNS lookup failed. Jan 25 09:20:06 aloha courieresmtp: id=00000000031FC00E.000000004B5DEDBA.000064D0,from=<a class="moz-txt-link-rfc2396E" href="mailto:suga@*wisdombell.com*"><su...@wi...></a>,addr=<a class="moz-txt-link-rfc2396E" href="mailto:ba...@gm..."><ba...@gm...></a>: DNS lookup failed. Jan 24 18:27:41 aloha courieresmtpd: error,relay=::ffff:209.85.210.189,from=<a class="moz-txt-link-rfc2396E" href="mailto:bna...@gm..."><bna...@gm...></a>: 417 DNS lookup failure: <b class="moz-txt-star"><span class="moz-txt-tag"></span></b><span class="moz-txt-star">gmail.com</span><b class="moz-txt-star"><span class="moz-txt-tag"></span></b>. Try again later Jan 24 18:28:02 aloha courieresmtpd: error,relay=::ffff:209.85.222.148,from=<a class="moz-txt-link-rfc2396E" href="mailto:3wR...@gr..."><3wR...@gr...></a>: 417 DNS lookup failure: <span class="moz-txt-star"><span class="moz-txt-tag"></span>groups.bounces.google.com</span><b class="moz-txt-star"><span class="moz-txt-tag"></span></b>. Try again later. Jan 24 18:49:08 aloha courieresmtpd: error,relay=::ffff:64.79.150.121,from=<a class="moz-txt-link-rfc2396E" href="mailto:nbu...@ne..."><nbu...@ne...></a>: 417 DNS lookup failure: <span class="moz-txt-star"><span class="moz-txt-tag"></span>netbeans.org</span><b class="moz-txt-star"><span class="moz-txt-tag"></span></b>. Try again later.</pre> <br> DNS is configured and working fine with all other software on the server. E.g.:<br> <br> <pre wrap="">aloha:/etc/courier# dig +short MX gmail.com 30 alt3.gmail-smtp-in.l.google.com. 40 alt4.gmail-smtp-in.l.google.com. 5 gmail-smtp-in.l.google.com. 10 alt1.gmail-smtp-in.l.google.com. 20 alt2.gmail-smtp-in.l.google.com. aloha:/etc/courier# dig +short A alt3.gmail-smtp-in.l.google.com 209.85.218.11 aloha:/etc/courier# dig +short MX groups.bounces.google.com 5 gmr-smtp-in.l.google.com. 10 alt1.gmr-smtp-in.l.google.com. 10 alt2.gmr-smtp-in.l.google.com. aloha:/etc/courier# dig +short A gmr-smtp-in.l.google.com 209.85.221.205 aloha:/etc/courier# dig +short MX manawiz.com 0 manawiz.com. aloha:/etc/courier# dig +short A manawiz.com 64.34.170.220 aloha:/etc/courier#</pre> <br> I reset BOFHCHECKDNS to 0 to work around this issue, and then for the past couple days have been trying to send a message to this list. Other messages I'm sending, or my users are sending, are generally getting to their recipients, but not messages to the courier-users list. They are all getting delayed-delivery responses with DNS failures, e.g.:<br> <br> <pre wrap=""><a class="moz-txt-link-rfc2396E" href="mailto:cou...@li..."><cou...@li...></a>: <<< DNS lookup failed. </pre> <br> The only way I'm able to send this message is to subscribe my gmail account and send from there. As best I can tell, my courier installation will not send to the courier-users list.<br> <br> How does courier access DNS? Any ideas on how I can resolve this issue? Having BOFHCHECKDNS=0 is letting much more spam through, a big problem, so I really need to change it back.<br> <br> Thanks for any help,<br> <br> Chuck<br> <br> </body> </html> |