sendmail: open-relay

[Peter Ulrich Kruppa]

Am Montag, den 04.01.2010, 08:21 -0500 schrieb Jerry:
> On Mon, 04 Jan 2010 13:51:36 +0100
> Peter Ulrich Kruppa <ulrich at pukruppa.net> replied:
> 
> >Hi,
> >
> >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.
> >        
> >            Target host = 213.146.114.24 pukruppa.net
> >            Test performed by <ulrich at pukruppa.net> from
> 213.146.114.24
> >        
> >        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.
> >
> >I am running FreeBSD -STABLE 8.0 amd64 .
> >I don't think I ever played around with sendmail's configuration. I
> >just use it as came out of the box.
> >
> >Any ideas?
> >
> >Uli.
> 
> I just tried and received a "Relaying denied" response.
> 
> By the way, I noticed that you apparently do not employ SMTP
> Authentication or offer STARTTLS on either port 25 or 587. You might
> want to consider employing them. Then again, you could just install
> Postfix. It is far easier to configure.
What exactly did you try, Jerry?

Uli.

> 
>