We're inheriting a client whose current ISP has screwed his store/forward role
for the client's off-line, private net Exchange server. The Exchange
server calls in to pick up mail, and mostly a lot gets lost.
The client has a leased line to our premises, where his private net is
NATed onto one of our public ip's. We'd like to avoid changing his config
if possible, while having our Imail server relay his Exchange
mail. Exchange will periodically ETRN to our Imail server which, but Imail
will not be able to initiate sending across NAT to his Exhange machine.
So how do we set up Imail and our DNS so that Imail stores incoming
internet mail, but does not attempt to forward it, until the client's
Exchange server picks it up, and then recieves mail from Exchange behind
NAT and forwards it to Internet?
We will be hosting the client's public domain name.
I had a couple of exchanges with Ipswitch support and found a couple of KB
articles which are 'close', but would appreciate anybody's comments.
tia,
Len
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