--On Tuesday, October 21, 2008 2:37 PM +0200 Sebastian Ries <
[EMAIL PROTECTED]> wrote:

# host -t MX example.com
example.com mail is handled by 100 mail.example.com.

# host mail.example.com
mail.example.com is an alias for hostname.example.com.
hostname.example.com has address 1.2.3.4


Wrong.  The MX record has to point to an A name, not a CNAME.


Joseph Brennan
Lead Email Systems Engineer
Columbia University Information Technology

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