I have 2 email accoutns setup: one personal (pop8 from ISP) and one for work
(Exchange). I keep my meeting events in my personal calendar, not on the
Exchange mailbox. I create a meeting event in my personal calendar and I send
the request via my pop8 email account (I select this account in the meeting
request window). Outlook sends the meeting request as follows: personal email
on behalf of work email account, and the email is being sent via the Exchange
server anyways. This is what I see in my sent items (pop8) after the request
has been sent. The recipient receives it from my work email account.

Bottom line it seems that Outlook overrides my selection of email account
when sending a meeting request.

Note: 1) I do not have this problem with regular outgoing emails. 2) My
default account is the pop8.

Thanks for your help.