[116939] in North American Network Operators' Group
Re: MTAs used
daemon@ATHENA.MIT.EDU (James Hess)
Wed Aug 26 20:46:58 2009
In-Reply-To: <14510.1251316871@turing-police.cc.vt.edu>
Date: Wed, 26 Aug 2009 19:46:06 -0500
From: James Hess <mysidia@gmail.com>
To: Valdis.Kletnieks@vt.edu
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, Aug 26, 2009 at 3:01 PM, <Valdis.Kletnieks@vt.edu> wrote:
> (Seriously - if 95% of the mail out there is spam, then the top 4-5 MTAs =
are
> probably the ratware that's sending out the spam. =A0Something to conside=
r...)
http://www.mailradar.com/mailstat/
Some of the most popular:
1. Sendmail; (24%)
2. Postfix (20%)
3. Qmail (17%)
4. Microsoft Mail
In all fairness, the ratware programs that send out spam are usually
MUAs, not MTAs, [RFC2476].
"Message Transfer Agent (MTA) --
A process which conforms to [SMTP-MTA], which acts as an SMTP server
to accept messages from an MSA or another MTA"
SMTP server installs that do not accept mail from other servers might be MS=
As
but are not MTAs.
(The default mail server installed in Fedora doesn't count as a MTA,
unless reconfigured to listen on some network interface, because the
default config only accepts a SMTP connection from a local MUA using
network loopback.)
--
--
-J
