We have recently upgraded to the Enterprise Edition to support more than the 16GB limit on the database. Ever since we have done this we receive mail – no problem, but the outgoing SMTP mail sits in the queue “messages with an unreachable destination”, but after restarting the SMTP service the mail transfers to the “email (SMTP connector – remote delivery)” queue and eventually gets sent out. Any ideas what could be causing this. Our router settings have not changed, nor have our ISDN lines (x2).
