#5.5.0 smtp;550 Delivery failed - HELO Name for IP Address 188.8.131.52 was "[184.108.40.206]"
Posted on 2006-06-15
I have been dealing with being put on a CBL list and I finally got in touch with them and found out the problem. Our HELO message is incorrect. It is using the IP Address rather than the FQDN.
Using Exchange Server 2003 Sp2, windows server 2003.
I have put in the FDQN in exchagen which would seem to solve the problem here. I also tested ehlo and helo messages by telnet and it shows the correct FQDN that matches the MX record. PULLING MY HAIR OUT!!!!
Also behind a symantec gateway security firewall. HELP!
I have contacted my ISP because there are 2 PTR records in DNS, but I do not think this should cause the problem, should it?
"You have more than one PTR record for 220.127.116.11. This is legal, but most programs will only use
the first PTR record listed (which may vary)."
the 1st one is our static IP (18.104.22.168.dia.static.qwest.net), while the second is the FQDN