If you can not see the extension in Outlook 2000, then do not allow extension feature may be on. There is a third party add on to chose to allow potentially harmful extensions. John Tolmachoff IT Manager, Network Engineer 211 E. Imperial Hwy., Suite 106 Fullerton, CA 92835 714-578-7999, ext. 104 jtolmachoff@xxxxxxxxxxxxxxxx www.reliancesoft.com -----Original Message----- From: Steven Lai [mailto:slai@xxxxxxxxxxx] Sent: Thursday, April 18, 2002 1:44 PM To: [ISAserver.org Discussion List] Subject: [isalist] SMTP filter can't filter all defined attachment? http://www.ISAserver.org Hi Tom Thanks for the reply! Actually, I did installed the W2K SP2 & ISA SP1. As I said, it can filter all the pif, exe, bat, scr, vbs files attachment that I send and tested by myself. However, right now for all foreign email, it can only partially filtered about 60 - 70 % of the attachment. Some attachment like .exe can still get thru? Can those virus email hid their extension so it cannot be seen? I have seen this right before my eyes. The user got it! And even strange things happen! Using Outlook Express, I can see the virus .exe or .bat attachment. But on Outlook 2000, I can't see the .exe or .bat attachment. Is it a bug in ISA or the virus email can hide or masquerade the extension name? I know ISA SP1 corrected a lot of SMTP bug but maybe still have some left?? Any input on this Tom or anyone??? Thanks for any help! SL "Thomas W Shinder [MVP]" <tshinder@xxxxxxxxxxx> wrote in message news:ulkkuaw5BHA.1948@xxxxxxxxxxxxxx > Hi Steven, > > Many changes were made to the SMTP filter with SP1, so you should install it > and see if that helps. > > HTH, > -- > Tom > www.isaserver.org/shinder > Get the book! > MVP -- ISA Server 2000 > > > "SL" <slai@xxxxxxxxxxx> wrote in message > news:utPfMvv5BHA.1888@xxxxxxxxxxxxxx > > Hi > > > > I got my Message Screener to work but not all the time! Kind of strange! > It > > can filter some attachment but not all attachment! I got my Message > Screener > > and SMTPCred installed on an SMTP Server, located away from the ISA > Server. > > And ran the dcomcnfg on the ISA. Email Server is sending and receiving > email > > fine! > > > > I setup the SMTP to filter .bat, .exe, .scr, .pif extension. It was able > to > > filter the .exe, .bat file but not the .scr file yesterday! But today, I > > still see files with .exe passing thru without being filter! Per Tom's in > > one of his email reply, I did a edit the Registry and deleted all those > > entries in the Vendor Parameters Sets values. Start clean again. But > doesn't > > seems to help! > > > > Seems like the SMTP filter works on & off! Sometimes, it filter sometimes > it > > don't! And it never filter my .scr files. ANybody has some idea why this > is > > happening? Will ISA SP1 helps? > > > > Thanks for any help! > > > > Steven ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jtolmachoff@xxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')