Hello I was working good and suddenly my windows server stopped sending emails via cdosys.asp and I found was list in CBL. They say: This IP address was detected and listed 85 times in the past 28 days, and 14 times in the past 24 hours. The most recent detection was at Thu Apr 5 15:05:00 2018 UTC +/- 5 minutes
The listing of this IP is because it HELOs as a bare IP address (A bare ip address looks like: "18.104.22.168"). It is not HELO'ing as itself ("xxx.xxx.xxx.xxx").
I have windows 2008 and almost we don’t send email just the normal reports of a LMS.
How can I fix the problem I just use my regular IP like years but suddenly stopped working.