After 02 months, my ISP finally helped me with Reverse DNS / PTR records. Now when I test my email server on MXToolBox, it states the following error on MXToolBox:
1- Reverse DNS does not match SMTP Banner
My email client is also not able to login to the IMAP. Previously, the email client could login to both IMAP/SMTP and only email was being rejected due to no PTR record.
I believe the tech guys at ISP didn't enter it correctly. The domain is caretakers.pk
Any help would be highly appreciated!
Thanks and regards,