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Ow Mun Heng wrote:
> I have no idea why there are 2 instances of sendmail running. This isn't
> normal right??

google: port 587

shows you that it's normal: http://www.ietf.org/rfc/rfc2476.txt

> This is what nmap localhost says

nmap -A localhost gives some additional info.

Christoph
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echo mailto: NOSPAM !#$.'<*>'|sed 's. ..'|tr "<*> !#:2" org@fr33z3

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On Tue, 2004-10-19 at 15:06, Christoph Gysin wrote:
> Ow Mun Heng wrote:
> > I have no idea why there are 2 instances of sendmail running. This isn't
> > normal right??
>
> google: port 587
>
> shows you that it's normal: http://www.ietf.org/rfc/rfc2476.txt

I've read that RFC in it's entirety and from my understanding, port 587
is used for message submission.

quote :
-------
Message Submission Agent (MSA)

A process which conforms to this specification, which acts as a
submission server to accept messages from MUAs, and either delivers
them or acts as an SMTP client to relay them to an MTA.

While most email clients and servers can be configured to use port
587 instead of 25, there are cases where this is not possible or
convenient. A site MAY choose to use port 25 for message submission,
by designating some hosts to be MSAs and others to be MTAs.
--------

How does Gentoo uses this port 587? (I'm using evolution in which the
only thing it displays is _pass_ it to sendmail. (There doesn't seem to be
port.) (Unless I opt to pass it to SMTP)

How can one disable it form listening to port 587??

This is my sendmail.mc file:-

include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`$Id: sendmail.mc,v 1.1 2004/05/30 09:20:40 robbat2 Exp $')dnl
OSTYPE(linux)dnl
DOMAIN(generic)dnl
FEATURE(`smrsh',`/usr/sbin/smrsh')dnl
FEATURE(`local_lmtp',`/usr/sbin/mail.local')dnl
define('PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
FEATURE(`accept_unresolvable_domains')dnl
MAILER(procmail)dnl
INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass-milter.sock, F=, T=C:15m;S:4m;R:4m;E:10m')dnl
define(`confMILTER_MACROS_CONNECT',`b, j, _, {daemon_name}, {if_name}, {if_addr}')dnl
MAILER(local)dnl
MAILER(smtp)dnl

I noticed that this is in /etc/mail/sendmail.cf on my FC2 install
FEATURE(`no_default_msa',`dnl')dnl

Reading through /usr/share/doc/sendmail-8.12.11-r3/README.cf.gz

no_default_msa Don't generate the default MSA daemon, i.e.,
DAEMON_OPTIONS(`Port=587,Name=MSA,M=E')
To define a MSA daemon with other parameters, use this
FEATURE and introduce new settings via DAEMON_OPTIONS().

Even after reading it through, I'm still confused. It further explains
that it's for Security, and asks to look at sendmail/SECURITY (which I
don't have on the local system and since I have I-net access, can anyone
please explain)?

--
Ow Mun Heng
Fedora GNU/Linux Core 2 on D600 1.4Ghz CPU kernel
2.6.7-2.jul1-interactive
Neuromancer 11:43:09 up 2:37, 8 users, load average: 0.47, 0.65, 0.75

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On Wed, 2004-10-20 at 12:01, Ow Mun Heng wrote:
> On Tue, 2004-10-19 at 15:06, Christoph Gysin wrote:
> > Ow Mun Heng wrote:
> > > I have no idea why there are 2 instances of sendmail running. This isn't
> > > normal right??
> >
> > google: port 587
> >
> > shows you that it's normal: http://www.ietf.org/rfc/rfc2476.txt

> Even after reading it through, I'm still confused.

Okay.. I'm Not confused anymore. After reading the article on
www.samag.com (sysadmin magazine titled Improving Sendmail By Turning it
Off)

I now know the difference between the MTA/MSA and MSP.

Now, What I need to find out if the need to have the MTA is still
warranted.

I've tested it as such that _not_ running it as a daemon,
evolution/mails won't get delivered. (MSA is off) and processing the
queue results in nada.

Since I use POP and an ISP relay, I wonder if I can disable them MTA,
enable the MSA and point the

D{MTAHost}[127.0.0.1]

to the ISP relay.

But what about incoming emails? I use fetchmail to get my mails from the
ISP, which in turn forwards it to my machine's MTA for spam and clamav
before finally to /var/spool/mbox. Those wouldn't work otherwise right?
Meaning, if I use Evolution to just pop the mails from the ISP.

So.. what are my choices?

Is running the MTA via loopback still advisable?


--
Ow Mun Heng
Fedora GNU/Linux Core 2 on D600 1.4Ghz CPU kernel
2.6.7-2.jul1-interactive
Neuromancer 17:26:44 up 8:20, 13 users, load average: 0.63, 0.60, 0.59

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