I have an exchange server we host at my location. My nameservers and dns manager stuff is set up at my go daddy account. I have about 300 users who are fine with E-mail. My dillema is this; I have 1 certain user who is not able to e-mail 1 particular individual in another location, different domain, not affiliated with us. He can e-mail others at that domain with no issue. The individual he is trying to E-mail is getting mail fine and has no issues. My account as well as others can E-mail that certain individual in the other domain. Each time we try to e-mail him from our location on this certain user account we get a bounce back from firstname.lastname@example.org stating a problem occurred.
Diagnostic information for Administrators:
Generating Server: tex1-mh359.smtproutes.com
#<#5.0.0 smtp; 550 Error:contenet rejected>##
Any help would be appreciated.