Message stuck in Outbox

As a test, stop the NAV serivces and see how the clients respond.
If once NAV is unloaded, and things run normal, check the version of NAV and any configuration settings.
I have seen odd client performance issues with AV products running on the information stores.

As a test, stop the NAV serivces and see how the clients respond.
If once NAV is unloaded, and things run normal, check the version of NAV and any configuration settings.
I have seen odd client performance issues with AV products running on the information stores.

I have tried this and get the same results

I've had this problem too.

You may find that the mail is being delivered, just the screen refresh at the client isn't working. You can test this by emailing an internal mailbox and before 'clearing' the outbox checking to see if the recipient gets it.

Another possible cause is if the AV product is using the AVAPI (introduced in SP3) that there may be timout problems where the scan takes too long. Is this only happening with emails with attachments? If you feel this may be the case place a support call with Symantec.

You may find that rebooting the server clears this problem, even if only temporarily.

I ran the latest Exchange service pack and rebooted the server a couple of days ago. My AV is in mapi mode. When sending to another mailbox, the user will not recieve the message without clicking on another folder in Outlook. The message will stay in the Outbox, but will also be delivered.

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