On Tue, 13 Nov 2007 13:09:34 PST, SM said:
One of the unintended advantages of TBR over greylisting is that it
can be used for a message recall feature. :-)
Not really, unless you *mandate* that a "cooling-off" period of (say)
5 minutes be enforced before anybody can fetch the message. Otherwise
you encounter a race condition between you finding 'recall message'
in the menu, and another site fetching the message.
I don't see that "mandating" a "cooling-off" period would actually
help. Do note, however, that information is available to the sender
whether the message was fetched before the recall.
(Yes, I see the smiley - I'm just filling in the blanks for less-clued
people who may someday be reading the list archives....)
John Leslie <john(_at_)jlc(_dot_)net>