Thanks Ed (and Jim). I've got a call into the company. I did verify that reverse DNS works and PTR record is there.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Kennedy, Jim Sent: Monday, August 29, 2005 1:34 PM To: Exchange Discussions Subject: RE: can't send to a company > -----Original Message----- > From: Chinnery, Paul > Subject: can't send to a company > > Exchange 200 server > > We are having trouble delivering to two different companies. > The error I am getting is: > > <mmc-mail #5.5.0 smtp;504 <mmc-mail>: Helo command > rejected: need fully-qualified hostname> Taking the above message for face value: The first command your server gives when it connects is HELO <hostname> That hostname should be a fully-qualified valid internet hostname. So HELO mail.yourpublicdomain.com will work, but HELO <yournetbiosdomain> will not, if someone is checking/rejecting for that. Also possible you do have a proper HELO, but no DNS set up for that hostname. Folks check for that, and if it does not resolve they will tag the hostname as invalid. But the above is just a literal translation of the error message. They sometimes return the wrong error and it could very well be just invalid rDNS as others have pointed out. Telnet on 25 to it as others said, type HELO mail.yourdomain.com (using a valid hostname from your public domain and see what the response is. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with.
