From owner-freebsd-questions Wed Jul 25 21:11: 3 2001 Delivered-To: freebsd-questions@freebsd.org Received: from smtp1.sentex.ca (smtp1.sentex.ca [199.212.134.4]) by hub.freebsd.org (Postfix) with ESMTP id 4107A37B401 for ; Wed, 25 Jul 2001 21:11:01 -0700 (PDT) (envelope-from mike@sentex.net) Received: from chimp.simianscience.com (cage.simianscience.com [64.7.134.1]) by smtp1.sentex.ca (8.11.2/8.11.1) with SMTP id f6Q4AwB36072; Thu, 26 Jul 2001 00:10:59 -0400 (EDT) (envelope-from mike@sentex.net) From: Mike Tancsa To: root@pukruppa.de ("P. U. (Uli) Kruppa") Cc: questions@freebsd.org Subject: Re: email-server: security question Date: Thu, 26 Jul 2001 00:10:58 -0400 Message-ID: References: In-Reply-To: X-Mailer: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 23 Jul 2001 02:08:45 -0400, in sentex.lists.freebsd.questions you = wrote: >Hi! > >I happily set up my home-email-server (sendmail's smtp, >qpoper's POP3 server - and it works, when I am online. >Thanx to FreeBSD-Diary b.t.w.). > >I have read in some manual or doc (but I forgot >where) there are some security tests to prevent abuse. > >Can anybody remember where they are? >Thank you. Try www.mail-abuse.org and see the section about open relays. There are quick checks you can do: =20 telnet://relay-test.mail-abuse.org/ http://www.abuse.net/relay.html ---Mike Mike Tancsa (mdtancsa@sentex.net) =09 Sentex Communications Corp, =09 Waterloo, Ontario, Canada "Given enough time, 100 monkeys on 100 routers=20 could setup a national IP network." (KDW2) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message