Now that I know a bit more (mainly from help here), I agree that removing port 80 in avast! Free under Troubleshooting/web ports is a bad idea. Since the web shield is what seems to be blocking Outlook's attempts to send email (not the email shield) and when I change Outlook's outgoing server port FROM 80 back to 25, it then works, I would think it would have to be something related to port 80 and the avast's web shield configuration. Since port 25 stopped working for me before on my server, it might start suddenly not working again. Avast needs to figure this out.
When I unchecked "well-known browser processes" and change the port back to 25 in Outlook, it works for me (at least for now). I had changed the outgoing email port to 80 in Outlook about six months ago when I couldn't send mail through Outlook. Working with my host/server, they suggested changing it to one of the other accepted ports, so I chose 80, not knowing it made any difference.
Rob, please post and let us know what happens when you do the reinstall. If I do a reinstall, it'll probably be back to the previous version of avast! Free
. At least avast techs have gotten back to you with some suggestions. Not so for me yet.
Oh, Rob, my website host/email etc., is ultimately owned by GoDaddy, even though it has another name. So the same ports are listed for me as outgoing (SMTP) ports as you listed.