Is IPV6 being demanded by Gmail?

1

I have been running MIAB with IPv6 disabled. I am now getting these errors. should I enable IPv6?

host
gmail-smtp-in.l.google.com[2607:f8b0:4023:1002::1b] said: 550-5.7.1
[2600:3c00::2000:98ff:fefa:77c] Gmail has detected that this message
550-5.7.1 does not meet IPv6 sending guidelines regarding PTR records and
550-5.7.1 authentication. For more information, go to 550 5.7.1
Email sender guidelines - Google Workspace Admin Help
46e09a7af769-7c6e31d1c93si851956a34.85 - gsmtp (in reply to end of DATA
command)

2

Are you sure? Gmail is explicitly mentioning an ipv6 address as the source, which should be yours. The ipv6 address should have a PTR.

3

MIAB should handle IPv6 and all the various bits and pieces out of the box. The only thing I’ve had to do was add a glue record, create a zone file for IPv6 reverse DNS delegation, tell my ISP to delegate to my name box :slight_smile:

I’ve not seen any reason to disable IPv6.