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Re^2: Determine if domain is actually used for emailby MidLifeXis (Monsignor) |
on Oct 04, 2011 at 18:27 UTC ( [id://929635]=note: print w/replies, xml ) | Need Help?? |
I believe that an A record, if an MX record does not exist, is also valid. See section 5 of http://www.ietf.org/rfc/rfc2821.txt. --MidLifeXis
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