Mailing list subscription problems

[Kyle Marek <psppsn96@gmail.com>]

(CC'd the public mailing list for visibility of problems that may be 
affecting others)

Hello,

Today I received an email from cygwin-bounces@cygwin.com with the 
subject line of "You have been unsubscribed from the Cygwin mailing 
list". I also just noticed that my Cygwin directory doesn't have any 
emails since the email identified by the following headers:

Date: Thu, 24 Nov 2022 00:42:07 -0800
Message-ID: <uTYFejifn-dsEe8GqEkFJQ@notifications.google.com>
Subject: You have been added to Newcommercial08
From: Newcommercial08 <newcommercial08+noreply@googlegroups.com>
To: cygwin@cygwin.com

I'm pretty sure the from address is so bounces are returned to an 
address that monitors for bounces. I am guessing that Google has been 
bouncing emails from the Cygwin mailing servers, and mailman 
automatically unsubscribed me after 25 days of not being able to deliver 
a single email to me. However, I am still receiving emails from mailman 
itself.

I re-subscribed, logged into the mailman web interface, and confirming 
that I am re-subscribed as of 02:47 UTC. I can see on the online archive 
that the mailing list has received emails since then, but I am still not 
receiving them. Note that they are NOT being sent to my spam directory.

So... Are the mailing list emails being bounced by Google?

Thank you,
Kyle Marek