Thanks to all. Chris -----Original Message----- From: Mike Liddekee [mailto:mliddekee@xxxxxxxxx] Sent: Friday, September 05, 2003 12:36 PM To: [ExchangeList] Subject: [exchangelist] RE: Attachment blocking http://www.MSExchange.org/ I've never heard of blocking .dat files. Files I block specifically based on extension are exe,com,bat,scr,pif,vbs. This cuts out 99.9% of the viruses. Other incoming attachments not following into one of those gets scanning by the AV. The winmail.dat file is basically just a text file and there should be no reason for blocking it. Regards, Mike Liddekee Network Engineer Humco Holding Group, Inc. 7400 Alumax Dr. Texarkana, TX 75501 Ph: (903) 831-7808 ext 697 -----Original Message----- From: Chris Wall [mailto:Chris.Wall@xxxxxxxxxxxxxxxxxxx] Sent: Friday, September 05, 2003 10:45 AM To: [ExchangeList] Subject: [exchangelist] Attachment blocking http://www.MSExchange.org/ Hello all, Running Exchange 5.5 I am running GFI Mail Security and have all .dat files blocked. I am experiencing an issue where valid e-mails from other organizations are being blocked due to winmail.dat files being attached to their messages. It is not realistic for me to send them directions to turn off TNEF to prevent the winmail.dat attachment. Do most of you block .dat files? If so, how do you overcome this issue in your organization? I can not whitelist a specific attachment through GFI so I am stuck. Any ideas appreciated. Thanks, Chris Wall ------------------------------------------------------ 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') ------------------------------------------------------ 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: Chris.Wall@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')