How do I block the new TLD's in Postfix?

For the longest time it seemed like what I had in place lately worked fine to block many of these new TLD's like .shop, .online, .tech, etc. All of a sudden it seems like some are getting through and I am wondering if I have something wrong with how I am set up or if there is something else going on letting these sneak in. Right now I have in my main.cf file smtpd_sender_restrictions = check_sender_access pcre:/etc/postfix/reject_domains reject_unknown_sender_domain reject_unknown_reverse_client_hostname reject_unknown_client_hostname In reject_domains I have many of the persistent TLD's listed: /\.online$/ REJECT However I also notice somewhere along the line I also added: /^.*@google.com$/ REJECT the culprit shows as this in the email headers eta.sureoak.online Am I daft and missing something blatant? Edit: I have followed some instructions from a different site and with little change it is blocking the required domains again but I am more confused now as I haven't really changed any of the original stuff. I did add smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/sender_access along with a domain google.com REJECT Thing is I am getting the reject message from the original settings. It's working now but still really confused what the original problem was and why it's working again now.