I have a question for the internet/e-mal gurus out there.

I recently had two messages dropped, because the "Remote SMTP server
rejected address". At first I thought this was simply because I had gotten
it wrong (in one case I DID have to remov an anti-spamming accretion to the
proper address). However, it seems that the real reason was because of a
pargmatic reality with
which I am confronted...

I maintain an e-mail account with an ISP in Western New York, for historical
reasons, and because it is a (relatively, at least) well-known address for
friends and clients. However, because I travel a lot, I use a national
service provider for actual connections. Lastly, because I frequently have
to have direct network connection to my largest client, my machine looks as
if it is in yet another domain.

My question is this... How can I satisfy the apparent demands that the
'name' of the machine and the 'reply to' address and the 'sent from' address
all be the same? I'm real reluctant to conduct all my correspondence via
hp3000-l (no - it would get real boring for the rest of you!). But I cant
reach the intended correspondents to ask for their help!  Aaaaagh!

Tony Frustratedly Furnivall