I think that my authentication issue may arise out of postfix or dovecot not being able to get the user name and password from mysql. I'm trying to understand how that process works so I can look in the right place.
It would be great if someone could explain how this part works. On the incoming side, there doesn't seem to be a problem with mysql.
I'm not sure whether I should look at dovecot or postfix for the problem. Dovecot is the SASL type. I've done a lot of reading on this, but there doesn't seem to be very specific info on what is actually happening when Outlook attempts to authenticate with the SMTP part of Postfix/Dovecot.
And I have questions about where I should look. Should I look in main.cf or master.cf? Or should I look at dovecot-mysql.conf or one of the mysql_virtual.....cf files? All this work is good for me as I'm learning alot, but I sure could use some help on this part.