Without saying why the mail was blocked (dumb content filter looking for porn? a spamhaus listing because the police server was hacked? something else?) that’s not going to help too much.

I’ve been spam filtering stuff at large providers since the late 90s and it never gets any easier to block 100% spam or let 100% legit mail through.

—srs

--srs

From: NANOG <nanog-bounces+ops.lists=gmail.com@nanog.org> on behalf of William Herrin <bill@herrin.us>
Sent: Wednesday, August 24, 2022 7:03:52 AM
To: nanog@nanog.org <nanog@nanog.org>
Subject: email spam

Hello,

To folks at places like Google and Godaddy which have gotten, shall we
say, overzealous about preventing spam from entering their systems,
consider the risk:

https://www.washingtonpost.com/education/2022/08/23/fairfax-county-counselor-solicitation-minor/

"Chesterfield County police said emails notifying Fairfax County
Public Schools that an employee was arrested and charged with
soliciting prostitution from a minor were not delivered to the school
system."

Long story short, the pedo kept his school job another year and a half.

There was once a time when both the outbound emails and the bounce
messages when they failed... worked. It was a spammy place but the
important emails got through.

Regards,
Bill Herrin