> When I attempt to add an MX record, NT says "DNS name is already in
> use as an alias (cname)".
RFC 2181 (some clarifications of other DNS RFCs) in section 10.1 says that when you
use CNAME, you can't have any other Resource Records (except DNSSEC records SIG, NXT,
and KEY). So, it sounds like you can't have a CNAME and MX record for the same domain.
In order to have the MX record, it sounds like you would need to either have it
associated with the canonical name (not on your DNS server), or not use a CNAME (have
an A record pointing to the correct IP address, and then an MX record with the FQDN).
-Scott
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