Warning: could not send message for past 4 hours

[Greg Stark]

The reason these error messages are going to the list is probably because the
list is setting "Reply-To" to point to kaffe at kaffe.org. This is incorrect.
Lists should not set a "Reply-To" header. If you want you could add an
"Errors-To" header and there are a few other headers that are appropriate for
lists, but "Reply-To" is intended for the actual author to be able to suggest
a better address than the "From" address for replies. (not followups).

greg