[Mailman-Developers] Re: way to minimize IO load with MTA supported VERP

[Tom Neff]

Peter W <peterw@usa.net> wrote:
>> I guess I was a little afraid that MTA's would get lost matching up
>> separately-issued RCPT TO: and OVRD commands that were supposed to
>> function  as logical pairs.
>
> Yes, that makes sense. But couldn't that be clarified in the new
> RFC/draft?

yes, it might even be obeyed :) but yes.

> A couple problems I see with that:
>
>  1) MTAs would have to be 100% uniform in the way they constructed
>     VERP return paths, or apps like mailman would not be able to use them
>
>  2) this takes aways some flexibility from the sending MTA, which
> currently     has the flexibility to deal with VERP in arbitrarily
> complex ways...

Okay, I agree, your way is better.  Let's make it as simple as possible:

	HELO shrek.org
	250 smtp.aol.com Hello shrek.org [123.45.6.7], glad to see you.
	MAIL FROM:news@shrek.org
	250 news@shrek.org... Sender ok
	RCPT TO:ogre@aol.com
	250 ogre@aol.com... Recipient ok
	VERP FROM:ogre-aol.com-1007679391-1f04c30dabd-news@shrek.org
	250 ogre-aol.com-1007679391-1f04c30dabd-news@shrek.org... Sender ok
	RCPT TO:witch@aol.com
	250 witch@aol.com... Recipient ok
	VERP FROM:witch-aol.com-1007679391-297c0dd13a3-news@shrek.org
	250 witch-aol.com-1007679391-297c0dd13a3-news@shrek.org... Sender ok
	DATA