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Date:      Mon, 12 May 2008 15:26:36 +0000
From:      brad davison <demonichandextensions@hotmail.com>
Cc:        FreeBSD List <freebsd-questions@freebsd.org>
Subject:   RE: telnet to mail server from outside does not get 220,	telnet from inside works
Message-ID:  <BLU116-W17BEC53717C4315B1A9B47A1CC0@phx.gbl>
In-Reply-To: <A83C99EB-EE3A-4300-9FFC-545859393132@goldmark.org>
References:  <BLU116-W309DE8D93C9B937FFF824AA1CC0@phx.gbl> <A83C99EB-EE3A-4300-9FFC-545859393132@goldmark.org>

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> From: jeffrey@goldmark.org
> To: demonichandextensions@hotmail.com
> Date: Mon, 12 May 2008 09:55:42 -0500
> CC: freebsd-questions@freebsd.org
> Subject: Re: telnet to mail server from outside does not get 220,	telnet =
from inside works
>=20
> On May 12, 2008, at 9:04 AM, brad davison wrote:
>=20
> > But if I try the same thing from 'outside' the firewall I get:
> >
> > %telnet email.xxxxxxxxxxxx.com 25
> > Trying 67.x.x.x...
> > Connected to email.xxxxxxxxxxx.com.
> > Escape character is '^]'.
> > Connection closed by foreign host.
>=20
> Have you checked to see what your mail logs say about those connection =20
> attempts?
>=20
> Cheers,
>=20
> -j
>=20

The maillog only has the line like:
May 12 11:20:14 email sm-mta[66223]: m4CFKEuB066223: [69.245.x.x] did not i=
ssue MAIL/EXPN/VRFY/ETRN during connection to IPv4

which is the same thing i get when i do the telnet XXXX 25 from a machine t=
hat's on the same network (that gets the 220)

May 12 11:20:52 email sm-mta[66314]: m4CFKfiJ066314: [10.0.60.60] did not i=
ssue MAIL/EXPN/VRFY/ETRN during connection to IPv4

Is there something for the telnet daemon, or the sendmail daemon that restr=
icts telnet access to just the subnet its on?  i.e 10.* network?



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