On May 26 2014, Frank Denis wrote:
On May 25, 2014, at 6:25 PM, hua peng <[email protected]> wrote:
If no MX provided, how will the messages be routed?
If no MX records are found, mail exchangers try A records.
See section 5 of RFC2821.
Or AAAA records (trumping that with section 5 of RFC 5321). Though
which it should try first will "depend on local circumstances, such
as performance of the relevant networks" ...
--
Chris Thompson University of Cambridge Information Services,
Email: [email protected] Roger Needham Building, 7 JJ Thomson Avenue,
Phone: +44 1223 334715 Cambridge CB3 0RB, United Kingdom.
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