I have an exchange server set up in our environment but the clients
have been set up as pop clients and not as exchange clients. I wont go
into the details as to why we have gone for that. The question is that
when a client sets its pop server as "abc.mail.com" it receives mails
so thats fine but when it writes "abc.mail.com" in SMTP it doesnt send
and gives an error as NO TRANSPORT SERVER AVAILABLE. At the moment the
clients are using the ISP's SMTP.

SMTP connector has been created on mail server and if a client is
setup as an EXCHANGE client then there are no issues, exchange is able
to send and receive email normally but we dont want to set it that
way. We want clients as POP clients.

Moreover could someone demonstrate the path taken by an email if
routed through an ISP's SMTP to the locally existent MAIL SERVER. Does
it go to the internet cloud or is ISA server smart enough to recognize
that this mail server is existent on the LAN only?

Would be looking for a few constructive replies. Thanx in advance.

Umar Pirzada

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