Pc behind firewall or server (proxy) being used as a smtp server? Spy ware type virus acting smtp engine that cant be found? I had a similar issue, could not clean, ended up formatting. Stopzilla, Adware, all full versions not able to recognize......truly remarkable. -----Original Message----- From: Basiru Ndow [mailto:bndow@xxxxxxxxxxxx] Sent: Friday, June 25, 2004 11:04 PM To: [ExchangeList] Subject: E-mail spoofing Hi All, I am using exchange 2003 and one of my e-mail accounts is been used to send out msgs with virus attachments to a mailing list that I subscribe to. I know I am not sending those msgs and also my server does not have any viruses. I have try turning off anonymous access but not sure if that will help. any help will be appreciated. Thanks