[Mailman-Developers] Re: Theoretical way to minimize IO load with MTA supported VERP
tneff@bigfoot.com
tneff@bigfoot.com
Thu, 06 Dec 2001 16:59:50 -0500
"Jay R. Ashworth" <jra@baylink.com> wrote:
> I don't see that there *is* any theoretical way to *keep* loads down
> with VERP, by it's very nature.
...
> If I'm sending 100 copies to @aol.com, without VERP, I send the message
> once.
>
> With VERP, I have to send it 100 times.
If one was willing to extend SMTP again, it would be theoretically possible
to send one copy of a message to aol.com for 100 recipients with a form of
VERP, using an extended syntax like
MAIL FROM:mylist-owner@mydomain.com
250 mylist-owner@mydomain.com... Sender ok
RCPT TO:johnsmith@aol.com EPFX:johnsmith-aol.com-
250 johnsmith@aol.com... Recipient ok
RCPT TO:joerandom@aol.com EPFX:joerandom-aol.com-
250 joerandom@aol.com... Recipient ok
DATA
and the receiving MTA would prepend the EPFX value to the envelope sender
for each recipient.