[antlr-interest] Public service announcement

[Brannon King]

The hierarchy uses some headers that not all mail servers support. It didn't
work with my Exchange 2003 service through etgroup.net. However, the Yahoo
SMTP seems to have no problem with it, and I'm accessing that account
through Outlook2003 so I know it's not an Outlook issue.

>Anyone know what cleverness pipermail/mailman is using to figure out thread
hierarchy?
>Must be another one of those things that's obvious to everyone but me :)
Andy