I installed Avast and Avast complains that port 25 is blocked or already in use. This is not a problem on other PC I have installed AVAST on and I certainly don’t have port 25 intentionally blocked. OUtlook was successfully sending email prior to the installation of Avast!
I am running WinXP with Outlook (although I have seen this problem with Outlook Express as well).
I am on a small network with a NAT router.
What is happening and how do I eliminate the error message?