My initial reaction, of course is yes. Considering, I am going to propose a solution to a client with Imail using TLS, I figured, I would make sure that this is the case.
Enable TLS. Select the check box to enable the SMTP service to accept SSL/TLS connections over the SMTP port through use of the STARTTLS command
http://www.ipswitch.com/support/imail/guide/2006/imail_server_wh/services_imail_smtp_settings.htm
Doesn’t get more black and white than this…


