Russ Valentine [MVP-Outlook] wrote:

In general, here are the reasons automatic polling might fail in
Outlook: 1. You have created an unrealistic polling interval. Many users
set
their polling interval to 1 minute thinking they will be downloading
mail continuously as it arrives. Such settings are not recommended.
They put an unnecessary strain on mail servers and can create
conflicting polling requests that can damage your Send/Receive Group
or even your account settings. 10 minutes is the recommended minimum.
2. While exiting Outlook, you inadvertently set your profile to Work
Offline (this option is immediately above the Exit command in the
File menu). 3. You have a damaged Send/Receive Group as documented he
http://support.microsoft.com/support.../q312/3/36.asp
4. You have overridden your Send/Receive Group settings as documented
he http://support.microsoft.com/support.../q320/8/36.asp
5. Your mail account settings are corrupt. Recreate your mail account
from scratch.
6. Firewall software is blocking your transmission. Disable your
Firewall temporarily to see if automatic polling is restored.

7. Outlook didn't close the last time you think you exited it and there may
be more than one instance of the Outlook process.
--
Brian Tillman