I am using Google Workspace for our sports club and we've been using the Google SMTP Relay to send out newsletters to our members. We authorized the IP address of the sending server and this has been working fine for 9 months.
Last week we saw delivery of emails sent to our members first delayed and then completely blocked, with the error message stating that the reason for that was that Google's SMTP Relay had been blacklisted:
Message blocked Your message to foo@bar.com has been blocked. See technical details below for more information.
The response from the remote server was:
550 5.7.1 Connection refused - IB114. 209.85.222.227 is blacklisted. Please contact Google and raise a ticket https://support.google.com/mail/contact/abusei{b5556b50-9e38-4305-afc5-d5a3698e7c6b}
The "contact google" link is to report abuse, which is not applicable here, as this is a problem on google's end, not with a user.
The IP address named as blacklisted is Google's SMTP Relay, so presumably this affects other people too that use Google's SMTP Relay to send out emails for their Google Workspace account:
nslookup
> 209.85.222.227
Server: 208.67.222.222
Address: 208.67.222.222#53
Non-authoritative answer:
227.222.85.209.in-addr.arpa name = mail-qk1-f227.google.com.
It looks like the blacklisting only occured for recipients at the @bigpond.com domain (Telstra Australia).
Any suggestion on how to get this to someone at google that can do something about it, i.e. get the IP address removed from the blacklist - or relocate to a new SMTP Relay ?
Thanks, Patrick
Secretary / GPCi
