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I have some troubles configuring SPF/DKIM for a VPS with a running instance of Postfix. Thanks to DMARC reports I'm finding and fixing always more issues.

Today I have a problem by setting SPF records in GoDaddy for a subdomain that matches the machine's name.

Given that domain is mydomain.com and the host with mailserver is host.mydomain.com. On my GoDaddy DNS panel, host.mydomain.com is a CNAME to somehostname.cloudapp.net.

When I try to add a SPF record for the subdomain @host.mydomain.com I get an error that there is already a host CNAME record and I can't create a host TXT record. The @ record for mydomain.com is up and running, and all DMARC reports are fine with that.

The question is: how can I tell GoDaddy to create a host.mydomain.com TXT record on DNS?

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1 Answer 1

up vote 0 down vote accepted

CNAME records can't coexist with other types of records, including TXT ones.

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Accepted becaue it's a brief and clear explanation of how DNS works. Any alternative? –  djechelon May 5 '13 at 19:54
Some DNS providers have a system where they can have a record pose as an A record while being essentially a CNAME behind the scenes - Amazon Route53 calls them ALIAS records, for example. –  ceejayoz May 6 '13 at 1:00

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