We have 3 seperate incidents at different locations where some emails are being stuck in the Exchange queue and marked as scheduled but never goes Active to send (running SBS2003 R2). This all started happening when an Automatic Update started to run last week (21 JAN 08) and after this, some emails were stuck in the queue and some were not.
There are no errors in Event Log, all services running fine and some external emails are going through. Only change was last week's Automatic Update.
Our temporary work around is to run MTA stack services which seems to allow all emails to go through (but it makes no sense) however, now emails stays in the queue until we force connection. Any ideas?