How do you look to see if reverse DNS lookup is setup? I realize that this would be on their side, but I would like to know for myself. I have been looking but can not seem to find it. Thanks, John
-----Original Message----- From: Simon Taylor [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 25, 2001 5:41 AM To: MS-Exchange Admin Issues Subject: RE: Relay I have in the past had relays refuse when they could not perform a reverse dns lookup on the address I was coming from - I would check their end if you can email to other domains just fine.. Cheers Simon -----Original Message----- From: Montgomery, John [mailto:[EMAIL PROTECTED]] Sent: 24 October 2001 23:19 To: MS-Exchange Admin Issues Subject: RE: Relay I did this and using SAlive made an SMTP connection to the IP address. It connected just fine. What seems strange is that it is coming from our IMS saying MSEXCH:IMS:HoneyBaked:Site:Server 3550 (000B09AA) 550 5.7.1 Unable to relay for [EMAIL PROTECTED] To test the GroupShield scenario I stopped GroupShield and tried it again. It still failed so I am assuming that this is not the problem. -----Original Message----- From: Benjamin Zachary [mailto:[EMAIL PROTECTED]] Sent: Wednesday, October 24, 2001 4:52 PM To: MS-Exchange Admin Issues Subject: RE: Relay You may want to nslookup on the MX record for DNS and make sure its pointing to the correct location. NSLOOKUP -Q=MX DOMAIN.COM -----Original Message----- From: Montgomery, John [mailto:[EMAIL PROTECTED]] Sent: Wednesday, October 24, 2001 3:30 PM To: MS-Exchange Admin Issues Subject: Relay We are having a strange problem. We send to a particular domain and get an NDR back from our server saying that relaying is prohibited. This same domain can send to us and we can send to other domains just fine. We were able to send to them before. Has anyone else seen anything like this? We have recently upgraded GroupShield to 4.5. I called their tech support to see if this was anything that they may know about, but they said that it is not. I have tried searching Microsoft but could not find anything. Exchange 5.5 SP4 Thanks, John Montgomery Information Technology LAN Administrator HoneyBaked Ham List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
