Hi all,
We are having problems with a newly launched Exchange 2007 server. Whenever we send to domians such as aol.com or rr.com (for instance) we get a bounce back with the error message "550 5.7.1. IP Name Lookup Failed". This doesnt happen with all domains, just a few.
My assumption is that there is missing DNS info and a reverse PTR record needs to be added.
AT&T is the company that provides our T1, however, when we contacted them, they said that they do not manage our DNS so they cannot add the PTR record. What Ive read thru google searches states that they are the ones who have to add it. Who is right? Or am I totally off base on my diagnoses of the problem?
Thanks!
We are having problems with a newly launched Exchange 2007 server. Whenever we send to domians such as aol.com or rr.com (for instance) we get a bounce back with the error message "550 5.7.1. IP Name Lookup Failed". This doesnt happen with all domains, just a few.
My assumption is that there is missing DNS info and a reverse PTR record needs to be added.
AT&T is the company that provides our T1, however, when we contacted them, they said that they do not manage our DNS so they cannot add the PTR record. What Ive read thru google searches states that they are the ones who have to add it. Who is right? Or am I totally off base on my diagnoses of the problem?
Thanks!