🚀 go-pugleaf

This is a lesson learned today by hard experience:

Maintainers of automated electronic mailing lists should beware that
the Internet e-mail gateway of the America OnLine commercial
conferencing system does NOT honor the RFC822 "Errors-To:" header.

In the event that a message from the Internet is undeliverable to
"joeuser@AOL.COM", an error message, in which the full text of the
failed inbound message is embedded, will be returned to the "From:"
address.

If the "From:" address is that of an automated mailing list to which
joeuser@AOL.COM belongs, when the error message gets back to the
mailing-list-host computer, the list host will send the ERROR message
out to the members of the mailing list.  Including joeuser@AOL.COM.

The result is an infinite mail loop between the list-host computer and
AOL.COM, with replicated copies of the increasingly large corpus of
nested error messages going to every member of the mailing list.

Naturally, maintainers of automated network mailing lists should be
cautious when an AOL.COM user wants to join a list.

-- 
 ...Richard S. Shuford  | "Do not move an ancient boundary stone
 ...shuford@cs.utk.edu  |  set up by your forefathers."
 ...Info-Stratus Coord. |  Proverbs 22:28 NIV