It's not that you or your email server is sending these emails. Someone that has your email address or address for person(s) in your organization has the virus. Viruses like SoBig fake the return headers so it appears to come from someone else. When a server gets an email that either has a virus attached (or in your case to a person that's no longer there), it may send a reply to the users listed in the return path of the message, which in this case is fake and inaccurate. If you're protected on all fronts then I wouldn't wortty about getting these types of messages. I usually get 4 or 5 a day myself. Until the day that we have no viruses (or hell freezes over), you will probably always get stuff like this. Regards, Mike Liddekee Network Engineer Humco Holding Group, Inc. 7400 Alumax Dr. Texarkana, TX 75501 Ph: (903) 831-7808 ext 697 -----Original Message----- From: Craig Weil [mailto:craig_weil@xxxxxxxxxxx] Sent: Thursday, September 04, 2003 11:12 AM To: [ExchangeList] Subject: [exchangelist] SoBIG http://www.MSExchange.org/ Hi all, I run an Exchange 2000 server using Panda Antivirus and have applied all of the latest patches to the machine. All of my network machines also have Panda and the latest virus definitions and Windows patches. My server catches SoBig on a regular basis (last count over 2800 incidences). Lately I've been receiving automated notifications from other organizations that my mail is undeliverable due to the SoBig virus. These are emails that I'm not even sending, and I understand that this is the way SoBig operates, however I'm not sure how I could be sending these emails given the scenario I first described (updates and antivirus on all machines). I've even tried running a SoBig.F removal tool and have found nothing on any of my machines. Anyone have some advice? ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: mliddekee@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')