Ok, I got a wierd problem. I just installed SBS 2011 (fresh install) and I went to everyones desktop and imported their PST (that were exported from the old exchange server). A couple of the people (for some strange reason) bcc and cc themselves when they send an email and they also cc a couple of other people in the office and the emails come back as underliverable. I watch them type the email and they type in the whole email address (not just the name).
I told them to type in just the name without the @ and the emails are delivered but not if they type in the whole email address for internal emails.
Any idea on what would cause this?