On 1/31/26 13:11, Steve Brown via Mailman-users wrote:
I'm still a bit confused why this address: bounce+66273f.99dcd9c-radg=lists.radg.us@stevebrown.us still shows up in the list of nonmembers on the list I administer.
When Mailman receives a post it creates an address record for all of the
sender addresses in that message if one doesn't already exist. Sender
addresses are all those found in places defined by the sender_headers
setting in the [mailman] section of mailman.cfg. By default these are
the From: header, the envelope sender, the Reply-To: header and the
Sender: header.
The address bounce+66273f.99dcd9c-radg=lists.radg.us@stevebrown.us was created by Mailman for a VERPed message to 66273f.99dcd9c-radg@lists.radg.us
The stevebrown.us is my personal domain and steve@stevebrown is the address I use to be a member of the list. I use administrator@radg.us for the owner of the list. radg.us is a small website that tells potential users how to subscribe and members how to use the list (e.g., how to change their settings or get to the archives). Unfortunately, I wasn't careful and spam/scam bots have scraped the addresses for joining, posting, or contacting the owner that I put on the site. I now have that site behind a Cloudflare firewall, but addresses are already accessible to the bad guys. The lists.radg.us domain is the "own domain" alias for the server that hosts the list run by Mailmanlists.net. What I haven't been able to figure out is what combination of events triggers the nonmember list entry. If I delete it, it comes back
in a few days or weeks. The workaround is to just leave it in the list of nonmembers, which is effective in that no other instances of that address appear, but annoying to me. Any explanation that might help me understand would be appreciated.
So, presumably, some spam was sent to a list by 66273f.99dcd9c-radg@lists.radg.us and a held message or rejection notice was sent to that address with envelope from bounce+66273f.99dcd9c-radg=lists.radg.us@stevebrown.us. Then some process received that message and maybe bounced it back to a list.
Try grepping your mail logs for 66273f.99dcd9c-radg which may help
understand what's happening.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan