How to declare an exception rule ?

Hello
I have a supplier website wich is using an advertising link into my account … how I can create an exception into my avast to not have an alert ?
http://publicite2.owanis.com/www/delivery/afr.php?zoneid=14&cb=10131106|{gzip}

Regards

If, and only if, you know the site is safe…

GUI>Settings>General>scroll down to “Exclusions”>click “URLs” add exclusion.

A much better solution is to stop using redirects.