[CentOS] Mail delivery failing with 450
mlistjoebstl at phorus.at
Sat Mar 7 13:01:58 UTC 2009
MX-records must point to A-records and not to IP adresses.
A "dig -t AXFR obrien-pifer.com @ns1.obrien-pifer.com | grep MX" returns:
mail.obrien-pifer.com. 38400 IN MX 1
Whereas you list "mail.obrien-pifer.com. IN MX 1 18.104.22.168"
in your config.
So your setup is invalid because:
- you're pointing your one and only MX record directly to an IP
- since it is interpreted as host and missing a "." at the end it's
expanded to "22.214.171.124.obrien-pifer.com." which doesnt exist
- it's a MX record for mail.obrien-pifer.com and not obrien-pifer.com
Your whole definition of the MX record looks goofy to me, dont want to
sound like an a.. but you better (re)read some tutorials on setting up DNS.
I really wonder if you receive the reply at all.
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