Exchange 2003 SBS: Not All Outbound Email Being Delivered
Posted on 2007-08-09
My company is running Windows 2003 SBS on a small 30-computer network. It runs Exchange 6.5.7638.1 (ie. Exchange 2003). At least three people have reported that occasionally, they will send an email to outside the company, and it will not be received by the other party. Outlook always says the email messages have been sent. The message log in Exchange is enabled and it appears that Exchange thinks the emails have been sent (at least, according to my masterful examination of the log).
The problem occurs usually at least twice a day. There are at least three people on our network reporting this problem, and at least four different destinations that messages are sometimes not delivered to. If the messages are sent again, they will get through.
As far as we know, the system has not dropped any incoming messages; only outgoing.