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Date:      Mon, 04 Jan 2010 13:02:42 +0000
From:      Matthew Seaman <m.seaman@infracaninophile.co.uk>
To:        Peter Ulrich Kruppa <ulrich@pukruppa.net>
Cc:        FreeBsd-Questions <freebsd-questions@freebsd.org>
Subject:   Re: sendmail: open-relay
Message-ID:  <4B41E6F2.703@infracaninophile.co.uk>
In-Reply-To: <1262609496.9547.12.camel@pukruppa.net>
References:  <1262609496.9547.12.camel@pukruppa.net>

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Peter Ulrich Kruppa wrote:
> Hi,
>=20
> I am running my own small mail-server, i.e. I use my desktop pc for
> sending and receiving my private mails.
> That worked quite nicely the last years. From time to time I tested my
> mail-server via abuse.net's mail-relay tester. - Never got any
> positives.
> Now suddenly I receive one:
>         This is a test of third-party mail relay, generated via the
>         Network Abuse Clearinghouse at http://www.abuse.net.
>        =20
>             Target host =3D 213.146.114.24 pukruppa.net
>             Test performed by <ulrich@pukruppa.net> from 213.146.114.24=

>        =20
>         A well-configured mail server should NOT relay third-party
>         email.
>         Otherwise, the server is subject to abuse by vandals and
>         spammers,
>         and probable blacklisting by recipients of the unwanted
>         third-party
>         e-mail.
> Of course I had some fun trying to read sendmail's documentation. But I=

> guess I need some help with this.
>=20
> I am running FreeBSD -STABLE 8.0 amd64 .
> I don't think I ever played around with sendmail's configuration. I jus=
t
> use it as came out of the box.
>=20
> Any ideas?

Plenty.  But it would help a great deal if you showed us your ${hostname}=
=2Emc.
The default sendmail config in FreeBSD isn't an open relay.  In fact,
it takes a bit of effort to make sendmail do open relay type stuff nowada=
ys,
and there are big fat warnings in the docco (/usr/share/sendmail/cf/READM=
E)
about most of those.

	Cheers,

	Matthew

--=20
Dr Matthew J Seaman MA, D.Phil.                   7 Priory Courtyard
                                                  Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey     Ramsgate
                                                  Kent, CT11 9PW


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