I have setup a new server at a ISP (in internet) with Windows 2003 Server R2 64 bit and have installed Micosoft Exchanger Server 2007 sp1
After the setup I can send emails from mynewserver.com to other servers and to my emial account, but when I reply to those messages, I get the following error:
Arrival-Date: Sat, 23 May 2009 18:04:01 -0700
Diagnostic-Code: smtp;550 5.7.1 Unable to relay for firstname.lastname@example.org
Can you please help? It have setup a SMTP connector already.