The problem is that RFC2821 explicitly forbids this. The parameter
for EHLO _MUST_ be the primary name.
um, slightly different but effectivly the same issue. our company has two
smtp servers, using different ip's, both HELO using just mydomain.com, their
actual names are server1.mydomain.com and server2.mydomain.com, the mx
entries for mydomain.com point to both server1 (10) and server2 (20).
mydomain.com doesn't have an A record, just an MX (that points to server1
and server2) record, shouldn't you look up the MX record of the EHLO if an A
record is not found? or really you should lookup the MX record first and
then fall back to the A record, if you did that then you would resolve your
issue.
you could then EHLO as jupiter.org and so long as the MX record pointed to
all three servers/ip's it would be valid.
or am i missing something?
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