> Can someone remind me what the fix is for the following sendmail error:
> 553 some.domain.com. config error: mail loops back to me (MX problem?)
>
> I know it is in the bat book somewhere, but I just cannot find it.
google search: "mail loops back to me" site:sendmail.org
http://www.sendmail.org/faq/section4.html#4.5
----------------
I'm getting these error messages:
553 MX list for domain.net points back to relay.domain.net
554 <[EMAIL PROTECTED]>... Local configuration error
How can I solve this problem? You have asked mail to a domain (e.g.,
domain.net) to be forwarded to a specific host (in this case,
relay.domain.net) by using an MX record, but the relay machine doesn't
recognize itself as domain.net. Add domain.net to
/etc/mail/local-host-names [known as /etc/sendmail.cw prior to version
8.10] (if you are using FEATURE(`use_cw_file')) or add "Cw domain.net" to
your configuration file.
There are a couple of additional cases where you don't actually want local
delivery, and thus adding domain.net to class w is not the right fix:
1) When relay.domain.net should just be acting as a forwarder, e.g. a
firewall/gateway box. The proper fix could be to set up a mailertable
entry for domain.net.
2) When relay.domain.net is a secondary (etc.) MX, and the MX mistakenly
points to a CNAME or other "non-canonical" name [this gives "config error:
mail loops back to me (MX problem?)"]. The proper fix is to point the MX
at the actual name, a "work-around" to add the MX target to class w.
--------
hth
marty
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