[TriLUG] GNU Mailman config question vis a vis "Triangle whatever list" vs "Joe Blow via Triangle whatever list"

[Pete Soper via TriLUG]

I'd love to know how to get the TriEmbed email list configured to show 
posting authors in email browsers. What's the trick with this? I bashed 
on this hard after the Yahoo-inflicted changes but missed the 
enhancements that TriLUG implemented. I had the impression you hacked 
your GNU Mailman, but an amateur radio list I subscribe to has the same 
"Joe Blow via list name" feature and I doubt the ISP involved was in the 
position to do any real mods to the Mailman code.

Thanks,
Pete