Hello,
I have a VPS with hostname "subdomain.mydomain1.com", rDNS is already set for that hostname, confirmed when I checked using nslookup.
I set mail domain "mydomain2.com", and I checked smtp test with mxlookup:
![https://snipboard.io/dfuiqR.jpg]
But when i tried send e-mail to gmail, but the e-mail was returned with this message:
smtp; 550-5.7.25 [2605:8340:3:5e::a] The IP address sending
this message does not have 550-5.7.25 a PTR record setup, or the
corresponding forward DNS entry does not 550-5.7.25 match the sending IP.
As a policy, Gmail does not accept messages 550-5.7.25 from IPs with
missing PTR records. For more information, go to 550-5.7.25
https://support.google.com/a?p=sender-guidelines-ip 550-5.7.25 To learn
more about Gmail requirements for bulk senders, visit 550 5.7.25
https://support.google.com/a?p=sender-guidelines.
d9443c01a7336-21de5f70a85si87964105ad.566 - gsmtp
In DNS mail domain, I saw PTR not set for "mydomain2.com":
![https://snipboard.io/NaqP7M.jpg]
Advice please, thank you.
