We recently received a new public IP. We have our IP information as follows:
A record of mail.domain.com points to external IP
MX record is mail.domain.com
rDNS is external IP -> mail.domain.com
I have checked on mxtoolbox and there are no blacklists and ESMTP service shows all green including the banner. Now the queue seems to be empty but i'm not receiving the tests.
I logged smtp i have the following:
18:41:55 18.104.22.168 - - 0 (AT&T)
18:44:31 22.214.171.124 EHLO - 250 (backup mx via dyndns)
18:44:31 126.96.36.199 MAIL - 250
18:44:31 188.8.131.52 RCPT - 250
18:44:31 184.108.40.206 DATA - 250
18:44:31 220.127.116.11 QUIT - 240
Looks like the mail is being rejected but not sure why??