Hi there

I was having the same problem with Avast 4.5. Any messages bigger than around 500k would simply remain in the outbox. However what was worse is that the recipient would recieve a copy but the message would remain in the outbox. So a person might recieve 15 1MB emails from me as outlook kept trying to send it! I changed the settings under advanced on Avast but this didn’t help. I had to change the settings on my Outlook account “More Settings” options (under advanced) where I changed the timeout to 6 minutes. This has fixed the problem hallelujah!

Many thanks for the assistance! Keewl! :wink: