E-Mail not Delivered

[Hobbes-22]

I have Outlook 2002 running on several WinXP computers.

Outgoing mail is moved to the sent box but is never delivered to addresses
on certain domains. Undelivered mail does not bounce back as undelivered.

However, the message is always delivered if any of the following is true:
1) it is a reply
2) a delivery receipt is requested
3) a read receipt is request

The problem started around August 13th when automatic updates started
downloading the latest round of Microsoft updates to computers on our
networks.

Any computer that was not running automatic updates works fine until I
manually run Microsoft updates.

The problem occurs with computers using both comcast & charter as their smtp
server so I don't think it is a smtp server issue. I have no other smtp
servers I can try.

Help!

 

[Brian Tillman [MVP - Outlook]]

I have Outlook 2002 running on several WinXP computers.

Outgoing mail is moved to the sent box but is never delivered to addresses
on certain domains. Undelivered mail does not bounce back as undelivered.

If the message moves from Outbox to Sent Items, then Outlook has delivered the
message to the next-in-line step in the mail process. Usually, this is the
outgoing mail server. In other cases, it can be an application, like an
antivirus scanner, sitting between Outlook and the mail server. In either
case, though, it's not an Outlook problem.

You can address this in several ways. First, make sure you have nothing
between Outlook and the mail server. Uninstall your antivirus program and
reinstall it without the mail scanning feature. You can also start Outlook in
safe mode to see if the problem is affected. If Outlook works properly, then
it's likely an add-in interfering.

You can also check with your mai lprovider, who should be able to check their
receive logs to see if, in fact, the message was received by their server.
You can also check Outlook's delivery log to see what happens in a
send/receive to make sure the next-in-line actor is accepting the message.