Hi everyone I was in the process of getting a new client over to SBS2000, as they are currently using Win2k / Exchange / Proxy 2.0 However I was called in due to the fact they "believe" they are infected with the SoBig.f Virus. However a complete scan of the Server / PC's and patching all machines proved there was no trace of the virus. However, they are getting inundated with hundreds upon hundreds of emails that is being picked up by the AV Symantec Program and sending the Emails out with a Quarantine Attachment. However people are also saying they are "receiving" Emails from the users in this LAN to external recipients with a virus attached! I do not believe it - But is this the behaviour of this new virus. Also, am I right in thinking if I get SBS2k / ISA up and running I can filter out .scr / .exe / .pif files?? Any advise is welcome :-) Simon Weaver Technical Consultant MCSE+Internet / MCSE Windows 2000 Integrated Solutions Corp. Ltd http://www.iscl.net