From email addresses sometimes strange on this list - was Re: [beginner] What's wrong?

[Chris Angelico]

On Tue, Apr 5, 2016 at 8:55 AM, Michael Torrie <torriem at gmail.com> wrote:
> Usenet-orginating posts look fine.  For example:
>
> From: Marko Rauhamaa <marko at pacujo.net>
> Newsgroups: comp.lang.python
>
> Whereas email ones are sometimes looking like this:
>
> From: Mark Lawrence via Python-list <python-list at python.org>
> Reply-To: Mark Lawrence <breamoreboy at yahoo.co.uk>

Ohhhh.... That probably explains it. It's because of Yahoo and mailing
lists. Yahoo did stuff that breaks stuff, so Mailman breaks stuff
differently to make sure that only Yahoo people get messed up a bit.
It means their names and addresses get slightly obscured, but delivery
works.

ChrisA