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Your page is explicitly a support page for dkim config. It is not a list of email requirements. YOU don't control their ptr records. Ptr records are placed on the IP space side. Google controls theirs for workspaces. So that page won't have help on the matter. Requirements haven't changed. I control systems that send millions of messages a month...
Ptr, SPF and dkim are now mandated. Dmarc is highly recommended for gmail...
Edit: https://forum.directadmin.com/threads/gmail-rejecting-emails-due-to-missing-or-incorrect-ptr-record-%E2%80%93-how-to-set-this-up-correctly.72802/
https://www.reddit.com/r/webdev/comments/1foik1l/false_error_message_does_not_have_a_ptr_record/
https://dmarcreport.com/blog/googles-guidelines-to-send-emails-to-gmail-users/
How many links you need before you recognize that you're wrong? All three of these are from last 10 months. One of which was from March.
I don't know what to tell you. I'm literally looking at my DNS records at cloudflare that point to my home IP and there is no PTR entry and yet I have dozens of emails in my gmail account about scheduled process and Prometheus alerts etc. The last undeliveryable I got from Gmail was 2 month ago when I was setting up the email server. Maybe because I'm on Google Fiber it's not enforcing it but I have no PTR record.
PTR records are NOT on the domain side.
https://www.cloudflare.com/learning/dns/dns-records/dns-ptr-record/
An example record lookup would be
8.8.8.8.in-addr.arpa. Like I've said twice now. YOU don't control google's PTRs (since you linked to google workspaces). They DO have PTRs setups.IP of 142.251.2.109 resolved for my DNS.
https://easydmarc.com/tools/ptr-record-lookup?domain=142.251.2.109&dns_server=1.1.1.1&dns_type=PTR
Resolves to a record name of
dl-in-f109.1e100.netEdit: Another name for a PTR record is rDNS. Or Reverse DNS. and that name is a bit more descriptive in that it's IP -> Name rather than DNSes normal job of Name -> IP address
I don't use Google Workspaces that's just the first article I found.
Maybe I misunderstood then. I though PTR records had to resolve to your email domain, not just match the IP address with an A record that resolves to the same IP. There is a PTR record that resolves to ip.googlefiber.net but it does not match my email domain.