Can't send and receive email to/from Gmail

[madala]

Hello everyone,

I am new into DirectAdmin and don't have too much knowledge about. I have setup directAdmin as webhosting panel on a vps for a shared web hosting purposes. Everything was going well until we found out that we cannot send or receive emails from Gmail, the error is about IPv6 misconfiguration. I have added the AAAA records for both @ and www point do the my ipv6, but I am still getting the same error. Any help?

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

xxxx
host gmail-smtp-in.l.google.com [2a00:xxxx]
SMTP error from remote mail server after end of data:
550-5.7.1 [2a02:xxx] Gmail has detected that this message does not
550-5.7.1 meet IPv6 sending guidelines regarding PTR records and authentication
550-5.7.1 . For more information, go to
550 5.7.1 https://support.google.com/mail/?p=IPv6AuthError 5b1f17b1804b1-429ded56550si4752335e9.198 - gsmtp

Best regards

 

[Active8]

add rDNS on your ipv6 address

 

[madala]

add rDNS on your ipv6 address

Can you explain me how to do so? I am a freshman.

Thank you!

 

[Active8]

Reverse DNS Lookup: What it is and How to Set it Up - Unspam

Enhance email deliverability with Reverse DNS Lookup: Learn what it is and how to set it up correctly to improve your email sender reputation.

unspam.email

In short:
1. add your hostname record in DNS as AAAA
2. go to your providers panel where you rent your vps or bought the domain and ip
3. add rDNS record there (first complete step 1 if not done before)