Okay, still with MX records I am a bit confused what exim does in terms of
trying to deliver mail to the hosts specified by MX records.
My understanding is that when exim performs a DNS lookup of a host (for mail
delivery) it looks for the MX records. (Assuming it gets some) it checks to
see if its own name is listed (again, are aliases checked here or is it
strictly a check of the list names?). If its own name is present it throws
away those of the same or higher preference value. At this point it may have
several hosts remaining which it can try. It makes a connection to the
lowest preference host. Now, I would have thought that if the connection
fails then it would try the next host, but that doesn't seem to happen.
Instead the message is deferred with the message log (and main log) showing,
for example, connection refused. Shouldn't exim try the next host in the MX
list at this point? I could find little about this in the manual.
Many thanks for any help, I'm sure I'm either misinterpreting something or
overlooking something simple :-)
John.
--------------------------------------------------------------------------
John Horne, University of Plymouth, UK Tel: +44 (0)1752 233914
E-mail: jhorne@???
Finger for PGP key: john@???
