I'd guess that their firewall is mis-identifying the SMTP response string your server is returning. Greg Lara ---------------------------------------------------------------------------- --------------------------- This e-mail message may contain privileged, confidential and/or proprietary information intended only for the person(s) named. If you are not the intended recipient, please destroy this message, and any attachments, and notify the sender by return e-mail. If you are not the intended recipient(s), or the employee or agent responsible for delivering the message to the intended recipient(s), you are hereby notified that any dissemination, disclosure or copying of this communication is strictly prohibited. ---------------------------------------------------------------------------- --------------------------- -----Original Message----- From: Clarke, Scott [mailto:Scott.Clarke@xxxxxxxxxxxx] Sent: Thursday, August 26, 2004 1:52 PM To: [ExchangeList] Subject: [exchangelist] RE: Huh???? http://www.MSExchange.org/ They just said that it shows up on their firewall????? -----Original Message----- From: Mark Fugatt [mailto:mark@xxxxxxxxx] Sent: Thursday, August 26, 2004 3:19 PM To: [ExchangeList] Subject: [exchangelist] RE: Huh???? http://www.MSExchange.org/ I would ask them what makes them think you are running Exchange 5.5 Mark Fugatt -----Original Message----- From: Scott Clarke [mailto:scott.clarke@xxxxxxxxxxxx] Sent: Thursday, August 26, 2004 2:40 PM To: [ExchangeList] Subject: [exchangelist] Huh???? http://www.MSExchange.org/ Hi all, I was just speaking with another company which was having trouble sending email to us (problem was on their end) and they said that it appears that our email server is running Exchange 5...but we are running Exchange 2000...what's up with that?