On Mar 05, 2016, at 04:14 PM, Mark Sapiro wrote: >The issue is that there is an MX record for mailman3.org pointing to >mail.mailman3.org, but mail.mailman3.org doesn't have an A record; it >has a CNAME pointing to mailman.iad1.psf.io which is the canonical name >of the server. > >RFC 2181, sec 10.3 says the target of and MX must have address records, >not CNAME. I.e. mail.mailman3.org should not have a CNAME, but rather an >A record pointing to 104.239.228.201 or I suppose instead, the MX for >mailman3.org could point directly at mailman.iad1.psf.io.
Fixed by setting mail. to an A record. Give it time to propagate, and it has a 3h TTL. Cheers, -Barry
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