[Raw Msg Headers][Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Forged sender test
I see you point and agree totally. But a forged sender test option is
required by my spec. I didn't come up with it and I don't have the
patience, time, and energy to convince the powers that be otherwise :). I
was just wondering if I was missing something and it was possible without
any source code changes.
----- Original Message -----
From: "Alexey Lobanov" <email@example.com>
Cc: "Vince Puzzella" <firstname.lastname@example.org>
Sent: Saturday, January 11, 2003 3:30 PM
Subject: Re: Forged sender test
> Hi Vince,
> On 11 Jan 2003 at 14:49, Vince Puzzella wrote:
> > > Just note that you will reject a lot of legitimate mail.
> > I am aware of the potential pitfalls of such a test. I was just
> > if it is at all possible.
> Everything is possible in open-source world, just "man vi" :-). Maybe,
> "pitfails" just explan why this idea is still not present in standard MTA.
> you really want to reject mail from Yahoo (REAL Yahoo, not forged)?
> For comparison, examples of real client tests (Postfix MTA):
> 1. HELO name must be present in DNS as valid A or MX RR.
> 2. Reverse DNS must exist, including "paranoid check" IP->PTR->A.
> In my knowledge, all "well-maintained" mail systems satisfy those two
> and most (really most!) of garbage sources don't.
> > On 11 Jan 2003 at 9:52, Vince Puzzella wrote:
> > From: "Vince Puzzella" <email@example.com>
> > To: <firstname.lastname@example.org>
> > Subject: Re: Router file naming convention
> > Date sent: Sat, 11 Jan 2003 09:52:08 -0500
> > > Is there anyway to get the zmailer smtp server to test for forged
> > > addresses at the MAIL FROM:<> phase?
> > > Essentially, I want to perform a DNS MX record query to verify that
> > > source IP is a valid mail exchanger for the sender's domain.
> > -
> > To unsubscribe from this list: send the line "unsubscribe zmailer" in
> > the body of a message to email@example.com
> To unsubscribe from this list: send the line "unsubscribe zmailer" in
> the body of a message to firstname.lastname@example.org
To unsubscribe from this list: send the line "unsubscribe zmailer" in
the body of a message to email@example.com