Message could not be delivered

hey @josephgodwinke i got this error again and again while sending emails
This is the mail system at host techdevine.com.

I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

               The mail system

qtv126910@gmail.com: host gmail-smtp-in.l.google.com[2607:f8b0:4023:c03::1b]
said: 550-5.7.25 [2600:3c01::f03c:93ff:fe11:41a] The IP address sending
this message 550-5.7.25 does not have a PTR record setup, or the
corresponding forward DNS 550-5.7.25 entry does not point to the sending
IP. As a policy, Gmail does not 550-5.7.25 accept messages from IPs with
missing PTR records. Please visit 550-5.7.25
Prevent mail to Gmail users from being blocked or sent to spam - Gmail Help for more 550
5.7.25 information. y68-20020a633247000000b00478ea44f124si29196987pgy.96 -
gsmtp (in reply to end of DATA command)

I have opened a new topic name message could not be delivered

what can i do now to solve this problem @josephgodwinke

Hello @abdul545 Happy you are here

Start by setting up a rDNS for your server. Go to where you are enjoying your server subscription from and setup ipv4 and ipv6 ptr records to the domain of your mailserver e.g. mail.mydomain.com

I have setup rdns for ipv4 in linode ptr records but was unable to do that with ipv6

No problem give it 30mins and try check your dns records if the ptr record has been setup.

If you see your ptr record all setup. Do a test here https://www.mail-tester.com/ by sending an email to the email address you see when you visit that link. Then click test to see results. Post results here (a screenshot)

its been two or three days since i did this

Screenshot 2023-01-17 000718

Well they are not setup. Do you mind support from teamviewer we fix this now? PM me if interested

yeah sure do it