1. E-mail sent to a public list which is archived can never be considered private, so turn of privacy request. 2. Sounds like a dictionary or harvesting attack. If your configuration was up to par with what is needed in today's environment, it would kill this in progress. John T eServices For You -----Original Message----- From: Rich Gallo [mailto:RGallo@xxxxxxxxxxxxxxxxx] Sent: Thursday, January 05, 2006 9:40 AM To: [ExchangeList] Subject: [exchangelist] Some Advice Please Sensitivity: Private http://www.MSExchange.org/ 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!!! ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: johnlist@xxxxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx -- 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