3 messages in net.sourceforge.lists.courier-users[courier-users] 451 4.1.8 Domain of s...
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Bowie BaileyDec 2, 2003 2:57 pm 
Gordon MessmerDec 2, 2003 3:59 pm 
Sam VarshavchikDec 2, 2003 4:01 pm 
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Subject:[courier-users] 451 4.1.8 Domain of sender address ... does not resolveActions...
From:Bowie Bailey (Bowi@BUC.com)
Date:Dec 2, 2003 2:57:33 pm
List:net.sourceforge.lists.courier-users

I'm not sure why I am seeing these messages from some mail servers:

451 4.1.8 Domain of sender address xx@buc.com does not resolve

The dns is fine as far as I can tell. A dig for buc.com on my external dns server gives me this:

;; ANSWER SECTION: buc.com. 28800 IN MX 20 compass2.buc.com. buc.com. 28800 IN MX 10 compass.buc.com. buc.com. 28800 IN NS compass2.buc.com. buc.com. 28800 IN NS compass.buc.com. buc.com. 28800 IN A 205.245.136.11 buc.com. 28800 IN SOA compass.buc.com. bucadmin.buc.com. 2003110403 10800 1800 604800 28800

;; ADDITIONAL SECTION: compass.buc.com. 28800 IN A 205.245.136.165 compass2.buc.com. 28800 IN A 205.245.136.166

I've got MX and A records, what else do I need?

Thanks, Bowie