I sent an inquiry to my company's web host company about getting duplication
e-mail in Outlook 2007 and got the following result. I am still at a loss as
to what to do about it or why it occurs?
For what it is worth here is the response I received.
Comments? Is this response correct and what can we do?
Marsh. Jenkins
Quaylor.Com LLC
Answer/Solution: Here are three possible explanations for this behavior:
1. The users are checking their mail too often. Some users will set their
mail client to check their mail every minute. This causes problems when the
next check begins before the last one has ended. The index file will no
longer be synchronized with the mailbox file. The way to fix this is for the
user to delete the index file for their mail client on their computer and for
the IMail administrator to delete the index file (main.idx or main.uid) from
the user's directory on the IMail server. If the user has their mail client
set to "leave messages on the server" then the number of messages in the
mailbox will affect how long it takes to do a new mail check. We recommend
setting the check timer to be at least 10 minutes. The user can manually
force a check if needed (if they are sure the last check has finished).
2. Outlook has a tendency to kill its cache during aborted POP3 sessions --
in other words, it connects to the server on some basic level, but then backs
out of the transaction at some point, tries to pull itself together and see
if it got any new messages, thinks there wasn't anything (new or old)
waiting, resets the UIDL cache, and you see duplicates again the next time
you connect. Incidentally, that next time can be part of the same POP3 check.
(For more information on this issue, please contact Microsoft's Technical
Support.)
3. Another program may be checking the mailbox while the user is logged in.
There are hundreds of free/shareware/ActiveX controls/Java applets that can
check mailboxes for new messages. A quick check shows that ICQ, 3 different
freeware utilities, AOL Instant Messenger, Yahoo and Netscape Notifier all
start POP sessions to check for new mail. All could cause the same results
with either POP or IMAP or with mail left on the server. The best solution
is not to use these utilities. One can also cause the problem by using Web
Messaging while another e-mail client is logged in to the same mailbox.
