Re: is it just me or...

["John R. Levine via NANOG" <nanog () lists nanog org>]

On Mon, 26 May 2025, Randy Bush wrote:
> > On my small system I feel pretty much the way you do, but large
> > systems have different issues.  Someone will get a plausible sender to
> > send them a message with spammy contents, then they will resend that
> > message unaltered to a zillion recipients at large mail systems which
> > is hard to detect quickly since the DKIM, DMARC et al. are all OK.
> > Being able to see there is an extra hop or two in the path that
> > doesn't look like a mailing list is useful for them.
>
> and 30+ years of email content and protocol hacking driven by that view
> has worked sooooo well

I go to a lot of meetings with people who run large mail systems, but I 
don't think I've ever seen you at one.

If you have some key insight we've all missed, and that will work at scale 
for mail systems with billions of users, let me know and I'll pass it 
along.

R's,
John
_______________________________________________
NANOG mailing list 
https://lists.nanog.org/archives/list/nanog () lists nanog org/message/NVU72B5AV7TTEI6EJNUEU7LO5RNO3O2K/