HELP: Exchange 2003 SMTP Can't send, Receives fine
I've pulling my hair out. This only happens recently and few months at a time and nothing has been changed on the exchange server setting. My mails are being queued on server and it's not being send like it always had before. The server receives emails fine but it can't not send. I check the port 25 on server and it's fine. I try telnet to gmail.com 25, hotmail.com 25 from server I get connection error. I don't know what is going. I still don't know what the problem is or the cause of it. I get error messages like can't not bind the DNS, remote server didn't response to connection, can't not connect to remote server on each domain smtp connector. I look up on google for solutions and I have no successful solving the sending issue. I tried adding external DNS, which we don't use before. Setting up new connector, maybe it's it's the PTR?
I did ran a test on server on dnsreport.com
also I found this warning on the report.
WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). This probably won't cause any harm, but is a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server.
ABCD-SERVER.domain.com claims to be non-existent host abcd-server.domain.local:
220 abcd-server.domain.local Microsoft ESMTP MAIL Service, Version: 6.0.3790.211 ready at Sat, 4 Feb 2006 06:15:53 -0700
What is this mean? I still have no idea. Maybe it's something with my DNS entry?
My OS
Windows 2003 Server Small Business (no SP1 install)
Exchange 2003
Linksys Router
I'm not sure if these problems can be solve with SP1 install. Any advices would greatly help and better my knowledge. Thanks
MadTomic
