My domain is receiving many spam mails having Gif image above and below it has some text messages , even our Barracuda 400 is unable to stop some of this mails
Do any of you have receive such kind of mails , what have you done to stop please share your experience.
Adjust your Barracuda settings on the Basics > Spam Scoring Settings to tighten up the levels. Take a look at the Spam mails in the logs and see what the scores are. Adjust the Quarantine Tag to catch those and quarantine on a per user or global basis.