We recently got a Barracuda Box (which is great by the way), and are using it as our SMTP smart host relay for incoming and outgoing mail from and to the outside world, respectively. We are getting hit with a HUGE amount of messages that are just empty (no TO:, no SUBJECT:, no FROM:, nothing) To give you an idea of just how many we are getting, we have 250 users and since I set up the new spam box last night (15 hours ago), we have received over 80,000 messages! Most of which were blocked… My question is – Is this some sort of continued attack our domain is under? If so, what steps can I take to help fix, or slow down, this problem? ANY Advice at all would be greatly appreciated as this stuff is killing us!!! -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.371 / Virus Database: 267.14.13/221 - Release Date: 1/4/2006