We have a customer on a 64 kbits leased line (doan laff, that sh*t's
expensive in France), running Exchange. We have our DNS set up so that
incoming mail is preferably delivered directly to him:
hisdomain.com IN MX 5 exchange.hisdomain.com
hisdomain.com IN MX 10 mailserver.ourdomain.com
Also, we relay all his outgoing mail, so we've got his
exhcange.hisdomain.com and hisdomain.com in our NT hosts file, and his
exchange set up to send all his outgoing to mailserver.ourdomain.com.
His overall mail delivery works fine, but we see many instances (using my
IMDeliver www.MEIway.com/IMDeliver log extractor tool) where our
mailserver is rdeliver-ing to hisdomain.com, ie, forwarding incoming mail
to him, meaning that our mailserver is working as his backup maildomain
frequently.
From everywhere and everytime I've pinged, nsuplooked, tracerouted, all is
cool from Internet to his exchange.hisdomain.com and hisdomain.com. Also
his company reports no pb's surfing all day over that line, so I'm fairly
sure the leased line connectivity is solid.
What could be the cause/solution for so many incoming Internet msgs being
relayed through us rather than being delivered directly to him?
Len
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