Date: Mon, 10 Jul 2000 15:51:19 +0100 From: Ben Smithurst <ben@scientia.demon.co.uk> To: "Richard E. Hawkins" <hawk@fac13.ds.psu.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: nessus says open relaying? Message-ID: <20000710155119.D74309@strontium.scientia.demon.co.uk> In-Reply-To: <200007071910.PAA01310@fac13.ds.psu.edu> References: <200007071910.PAA01310@fac13.ds.psu.edu>
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--wULyF7TL5taEdwHz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Richard E. Hawkins wrote: > I just checked my system with nessus, and one of the reports is that >=20 > smtp (25/tcp) INFO The remote SMTP server allows the relaying. This mea= ns that > it allows spammers to use your mail server to send their mails to > the world, thus wasting your network bandwidth. >=20 > Is this saying that my machine (and I suppose every other stock 4.0 machi= ne) > is an open relay? Or am I misreading this? If you check your own machine, I don't know how nessus can tell. For a good mail relay check, just to "telnet mail-abuse.org". The mail-abuse.org system will run a check on the system you are connecting from and show you the results (you don't have to log in as anything special, it just starts straight away). I think that's the right way, if that doesn't work, you should be able to find a web interface to it somewhere off <http://www.mail-abuse.org/>. --=20 Ben Smithurst / ben@scientia.demon.co.uk / PGP: 0x99392F7D --wULyF7TL5taEdwHz Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 5.0i for non-commercial use MessageID: Eg8OZXD9ag51wDDoMIqg9UBmiGoXjdbs iQCVAwUBOWni5isPVtiZOS99AQEazwQAoirNmJ3YYvR/iKbV3B9aRd7b+D9BiYgA 0fGMl/dM/WmMZ0GW2lFkcXIxS4sfGsQoFc5ft90qSrbNIH0bXPUjMSJ7/XIWzWR2 32VsazN6SD8CN1AYiLsbKmJBgWhdKeySi9iMgZ9nuTiZ16OMfjU+fi2l8lS1K91A gLkE/FbqE8M= =LOQC -----END PGP SIGNATURE----- --wULyF7TL5taEdwHz-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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