Ok, I know, a lot of people ask this question, I just looked at answers for an hour and none of them apply here.
Here's the situation, MS SBS 2003 server with SP1
Desktop had XP pro SP2 and Outlook 2003 SP2 configured as an exchange client, cached.
send an email, it just stays in the out box.
I tried deleting the ost file, no go.
re-creating the outlook profile, no go.
un-checking all "add-in" in Outlook, no go.
I un-checked "cached exchange mode" and it ooks like the email went through but it never gets delivered.
When checking the users mailbox via OWA the outbox is empty so it looks like it's not getting synced from the desktop. Also, sending email from OWA works.
This is happening on 2 computers of 4, the other two are ok. It started a few days ago and the customer is claiming that nothing was done to the computers beforehand.