Originally Posted by UAVirgin
Let me clarify the problem...the problem is which SMTP server outlook uses to send out the email, not which account it uses. It should use the SMTP server associated with the account sending the email but this no longer happens.
It appears that my only way around this problem is to use Send/Receive Groups and manually send my email from accounts other than the default. It is hard to tell what caused this all of the sudden, but I don't have the time to dig into it or rebuild my Outlook setup.
Why not use an smtp like no ip for all of the accounts? You continue to use the multiple POP3 servers and addresses, but you use just 1 smtp for all.