Quite possibly, unless you're blocking things on ISA. Look for a process called msblaste.exe and/or a value called "windows auto update" in HKLM\Software\Microsoft\Windows\CurrentVersion\Run on all machines in the mix . If you find either one of those then you've got it. Delete that value in the registry, delete \winnt\system32\msblast.exe and patch your box(es). -Shawn ----- Shawn R. Quillman Robert Bosch Corporation RBNA/CIT1.1 38000 Hills Tech Drive Farmington Hills, MI 48331 (248) 553-1164 (P) (248) 848-2855 (F) shawn.quillman@xxxxxxxxxxxx -----Original Message----- From: Jeff Sloan [mailto:jsloan@xxxxxxxxxxxx] Sent: Thursday, August 14, 2003 9:17 AM To: [ISAserver.org Discussion List] Subject: [isalist] MS-Blast vs exchange publishing http://www.ISAserver.org Does this worm have anything to do with the fact that my external users cant connect to our exchange server that is RPC published? I know it has to do with RPC and port 135, which is where the publishing goes on. I called earthlink thinking they may have blocked the protocol or ports, but they say they haven't, yet we cant connect no matter how many retries. Just started happening the last few days. Thanks Jeff Sloan Network Administrator Cross Oil Refining & Marketing, Inc. 484 E. 6th St. Smackover, AR 71762 Phone 870-864-8688 Fax 870-864-8689 Cell 870-866-9941 ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.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 ISAserver.org Discussion List as: shawn.quillman@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')