By default, MSGTAG listen on port 25, I changed it to 7362 (I installed MSGTAG before Avast!).
If MSGTAG is alone (and Outlook Express nicely configured) MSGTAG will absolutely work with that port, but Avast! will not like that and pop up a message as soon as it will start.
So the only way I have found is to use one or other (MSGTAG or Avast!) but not together.
Or can use together but not in the same mail adress (different account in Outlook Express).

Clearly, we must find a way to send the mail to Avast! or MSGTAG and after it process the mail, must send it to the other one, process it and send it to the recipient. :slight_smile: