Mail to wildcard MX records doesn't work from Yahoo Mail, butfine from other addresses
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From: Victor Duchovni on 13 Apr 2010 11:58 On Tue, Apr 13, 2010 at 12:16:47AM -0700, Bob Eastbrook wrote: > I use wildcard MX records for mail, and a wildcard CNAME for web > traffic. For example: > > *.example.com = MX record for mail.example.com > *.example.com = CNAME myapp.appspot.com This is invalid. No DNS domain can resolve to a CNAME and to other data. A CNAME is a pointer to data held elsewhere, and makes the domain in question unable to hold any other record type. Any decent DNS configuration validation tool should pick this up. The correct solution is: *.example.com. IN CNAME myapp.appspot.com. myapp.appspot.com. IN MX 0 mail.example.com. If you don't control the DNS for myapp.appspot.com, you are out of luck! -- Viktor. P.S. Morgan Stanley is looking for a New York City based, Senior Unix system/email administrator to architect and sustain our perimeter email environment. If you are interested, please drop me a note. |