On 4 Sep 2011, at 06:27, "Murray S. Kucherawy" <msk(_at_)cloudmark(_dot_)com>
wrote:
To my knowledge, sendmail implements the queue with the factors Ned listed
above included in its sorting, but it doesn't have a system that detects "Oh
hey, that host is available again, I'm going to flush everything I have
queued for it." That just falls out naturally as one aspect of a complete
queue run.
Exim has a database of which messages are waiting for which hosts, so when a
host comes back to life it can flush the messages down the same connection
without having to wait for the next queue run.
Tony.
--
f.anthony.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/