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Date:      Mon, 31 Aug 1998 23:15:58 +0000 (GMT)
From:      Terry Lambert <tlambert@primenet.com>
To:        fullermd@futuresouth.com (Matthew D. Fuller)
Cc:        tlambert@primenet.com, don@whtech.com, hackers@FreeBSD.ORG
Subject:   Re: Weird sendmail/pop problem
Message-ID:  <199808312315.QAA11244@usr01.primenet.com>
In-Reply-To: <19980829012108.51411@futuresouth.com> from "Matthew D. Fuller" at Aug 29, 98 01:21:08 am

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> > You can't send mail over a POP3 connection, you can only retrieve it;
> > you use SMTP to *send* mail.
> 
> Before anyone else chimes in, there's some funky POP3 interface to send
> mail to the server via it.

Yes; that would be the expired ietf-draft which failed to be ratified,
mostly because it was an abomination, and the rebirth of a similar
draft, to wit: draft-hansen-pop3-xtndext-00.txt.

This draft will, likewise, be struck down by all right-thinking IETF
voters, because it fails to provide a mechanism for passing envelope-to
and envelope-from information to the server, except in message headers,
and messages headers are *DATA*.

This draft seems to describe a sending interface better suited to
sending SPAM than anoy other interface currently available today.

Perhaps Aegis will implement this when they reinstate Sanford Wallace's
Internet connection...


> That said, it's still being DELIVERED through SMTP, so your point stands.
> Here's my bet:
> Try sending from the local box, not though POP3
> mail -s 'test msg' forwarduser < /dev/null
> 
> See if that gets there (both theres).
> Try (perhaps long shot, but *shrug*) killing sendmail and restarting it.

Most likely, either the forward is incorrect, or the address refers
to the same mailbox, and they are seen different behaviour based on
either ruleset 4/5 differences and/or they are seeing that two
connections are made for a virtual host when seen as a seperate MX
via external DNS, but as local delivery by the internal.

The information request I made stands; it is the minimum amount
of information required to guarantee that someone can tell them
what is going on.

PS: If they are using draft-hansen-pop3-xtndext-00.txt or the
earlier (expored) draft to send mail via POP, then they are being
about as unconstructive as draft-myers-smtp-auth-11.txt and the
draft that uses it for etrn: draft-gellens-on-demand-05.txt,
which ignores the Best Known Practice of using Dynamic DNS and
Split DNS so that standard ETRN will function with Dynamic IP.
Balkanizing the Internet is not going to solve th SPAM problem,
and Dynamic IP isn't going to solve the IPv4 address space problem.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.

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