On Wed, Apr 12, 2000 at 01:26:07AM -0200, Manuel Lemos wrote:
> Hello John,
> 
> On 12-Apr-00 02:05:12, you wrote:
> 
> >On Wed, Apr 12, 2000 at 12:50:41AM -0200, Manuel Lemos wrote:
> >> Do you mean there is no way to determine wether the SMTP server supports
> >> VERP?
> 
> >Of course there is.  You can tell an SMTP server can receive VERP
> >encoded sender addresses by the fact that it's an SMTP server. 
> 
> I was not meaning receiving servers, but sending servers as I want to relay
> messages to a local server using SMTP, not qmail-inject or some other
> program.  For reasons specific of my purposes I need to relay mail using
> SMTP.

Of course, if you're contacting an SMTP server to relay for you, then
-IT- can receive VERP encoded sender addresses by the fact that it
is an SMTP server.

Are you requesting a method to avoid doing the verp expansion on your
own? 
 
> Yes, but id does not contain any example of typical SMTP data interchange
> to use VERP like most SMTP based RFC present.

Your side would look like:

HELO domain.com
FROM: <[EMAIL PROTECTED]>
TO: <[EMAIL PROTECTED]>
DATA
[message]
.

> Another thing, eGroups lists now send messages with headers like this:
> 
> X-eGroups-Return: [EMAIL PROTECTED]
> 
> I suppose this is enabled with VERP.  

Nope.  "Variable Envelope Return Paths"  That's not a return path.
Thus, it's not a verp.  It mimics the functionality by presumably
using a parser to look for this header in all returns.

> Anybody knows how they achieve this?

Custom software.

John

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