On Fri, Jul 10, 1998 at 06:48:24PM -0500, Dave Sill wrote:
> Sure it does. Three reasons off the top of my head:
> 1) Allows VERP (variable envelop return path), whereby a bounce
> identifies the (message, recipient) pair that was undeliverable,
> enabling sophisticated bounce handling.
> 2) SMTP is a high-latency protocol. A message to five recipients can
> be delivered faster by five parallel sessions than one session with
> five devlieries.
One thing to consider: Many large mail servers (such as those
used by large ISPs) have what is known as a 'single copy message
store', so that if a message comes in for more than one
recipient, the message is only stored once (and only takes up
disk space once) and then it is 'linked' into the other
If I were managing the mail service for a large ISP (which I do),
and I was using a mail server with a single copy message store
(which I'm not, currently) I'd be very concerned about the way
qmail-originated messges take up more spool space than a message
that originated from a different MTA.