The public IP address your exchange server uses for outgoing connections. Might be worth posting one of the bounces as it may make it clearer why it's being bounced.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Tuesday, June 22, 2004 7:09 PM > To: Exchange Discussions > Subject: RE: REVERSE DNS LOOKUP FOR EXCHANGE SERVER > > > Ok...do an rDNS on my internal exchange server IP address? Or actually > the IP address from my ISP I use for mail? > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jim > Kennedy > Sent: Tuesday, June 22, 2004 2:00 PM > To: Exchange Discussions > Subject: RE: REVERSE DNS LOOKUP FOR EXCHANGE SERVER > > > Any one blocking on what you describe is a tard, imho. Sending and > receiving machines are different more often than not. Total insanity. > > However, I do not think that is what they are blocking on. > > Look at the IP for your sending machine. Do an rDNS on it. Does that > match what your machine announces in the HELO? I bet it does not, and > that is what they are rejecting on. The RFC's suggest reverse > DNS match > the HELO, but say that rejecting email based upon it should > not be done. > But many people are doing it, including AOL. I think it is bad, but it > is their machine. > > > From: On Behalf Of [EMAIL PROTECTED] > Sent: Tuesday, June 22, 2004 1:24 PM > Subject: RE: REVERSE DNS LOOKUP FOR EXCHANGE SERVER > > > Hey Guys, > > Just wondering if anyone knows where I can find something on policy > regulating reverse DNS lookups for your e-mail server? I have one guy > that's blocking e-mails from my domain. Situation I have is the > following: > - E-mail is being received on one IP address from my ISP, > but when mail > leaves my exchange server it shows that it is coming from another IP > address that I own from my ISP. So when they do a reverse DNS lookup, > the IP addresses don't match up, and hence their rule blocks my mail. > > Thanks > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t ext_mode=& lang=english To unsubscribe send a blank email to %%email.unsub%% 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/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang =english To unsubscribe send a blank email to %%email.unsub%% 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/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english 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.
