Well, the answer may have been found. My clients are all running on IP-Less Virtual Hosts, and this article http://support.ipswitch.com/kb/IM-20000117-DM01.htm clearly states:
Note, In versions before IMail 7.0 SMTP Authentication did not work for shared-IP-address Virtual Hosts which use an external user database. The Primary Domain must use the IMail user database for SMTP Authentication to work for shared-IP-address Virtual Hosts. If your Virtual Host does have its own IP address then SMTP Authentication works for any user database. This being the case, does anyone know how to switch the Primary Domain to use the IMail database instead of an external database? Is noone else using IP-Less Virtual Hosts? I cannot believe I am the first to have IMail setup this way esp. since there is a kb article about it. Jeff Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
