MX records are supposed to be pointed to the name the mail
exhanger knows itself as. This will correspond to a A
record. If I could work out a way to determine which A
records don't correspond to the name by which the mail
exchanger knows itself as I'd also have named issue a warning
for such A records. Unfortunately there isn't a way to
make such a determination.
When a CNAME is used you configuration errors reported from
MTA's when they try to send email to themselves. This still
happens today.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: mark_andr...@isc.org
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