wrote:

I have 4 different email accounts set up with outlook. One of them is
an Exchange account. One of my POP accounts is already setup as my
default and all regular email works good.

The problem is, whenever I send a meeting request, Outlook sends the
email using the identity of my Exchange account, regardless of which
"Account" is specified in the Accounts pulldown. If I specify one of
my pop accounts in the meeting request, it only uses that smtp server
as the sender, then the recipient gets an email from exchange
identity, and the reply is also as such.

Outlook doesn't have identities. Outlook Express does.

What account have you chosen as the default? Is your Exchange set up to
send SMTP messages out to the Internet? What have the mail people said when
you asked them about this issue?
--
Brian Tillman