Howdy, all. I have a little problem I'm trying to troubleshoot, and am having difficulty finding info on it.
I have set up IIS5 on a Win2kPro (SP2, fully patched) box that's destined to sit in my DMZ, and act as a relay box for our Exchange server. I'm currently testing it before deploying it, and have run into problems getting it to talk with several domains, including msn.com and attbi.com. Other domains have no problems. It's not a reverse DNS lookup issue, since switching my outbound SMTP server to the linux/sendmail box that I'm about to decomnission uses the same IP address and has no problems. I'm testing with a friend at another company, and I get a delivery status notifcation (failure) message, with an attachment that reads as follows: ___________________________________ Reporting-MTA: dns;mycompany.com Arrival-Date: Thu, 20 Dec 2001 13:03:31 -0800 Final-Recipient: rfc822;[EMAIL PROTECTED] Action: failed Status: 5.0.0 Diagnostic-Code: smtp;500 Syntax error, command unrecognized er OK 0-TURN 250-ATRN 250-SIZE 250-ETRN 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-8bitmime 250-BINARYMIME 250-CHUNKING 250-VRFY 250-X-LINK2STATE 250-XEXCH50 250 OK ___________________________________________ The logs from his Exchange 2000 server are in this form: date time c-ip cs-username s-sitename s-computername s-ip s-port cs-method cs-uri-stem cs-uri-query sc-status sc-win32-status sc-bytes cs-bytes time-taken cs-version cs-host cs(User-Agent) cs(Cookie) cs(Referer) 2001-12-20 22:52:09 216.202.42.5 mycompany.com SMTPSVC1 MERCURY 192.168.11.2 0 EHLO - +mycompany.com 250 0 228 15 110 SMTP - - - - 2001-12-20 22:52:09 216.202.42.5 mycompany.com SMTPSVC1 MERCURY 192.168.11.2 0 MAIL - +FROM:<[EMAIL PROTECTED]> 250 0 47 34 47 SMTP - - - - 2001-12-20 22:52:09 216.202.42.5 mycompany.com SMTPSVC1 MERCURY 192.168.11.2 0 RCPT - +TO:<[EMAIL PROTECTED]> 250 0 28 25 0 SMTP - - - - 2001-12-20 22:52:09 216.202.42.5 mycompany.com SMTPSVC1 MERCURY 192.168.11.2 0 QUIT - mycompany.com 0 547 67 4 0 SMTP - - - - I'm using my personal laptop with Outlook2000 to send the message, and the outbound SMTP is the new relay server. I've set the domain in the default virtual server on IIS5 so that it's supposed to be using HELO instead of EHLO, but the logs on the Exchange 2000 server at his end (hiscompany.com) indicate that the SMTP service on my end is still using EHLO. I've googled and searched support.microsoft.com for clues, to no avail. Has anyone run into this issue? Kurt Passwords are like underwear: you don't share them, you don't hang them on your monitor, or under your keyboard, you don't email them, or put them on a web site, and you must change them very often. - Sunder List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
