From owner-freebsd-questions@FreeBSD.ORG Sat Aug 14 18:42:32 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A47E01065693 for ; Sat, 14 Aug 2010 18:42:32 +0000 (UTC) (envelope-from noeldude@gmail.com) Received: from mail-gx0-f182.google.com (mail-gx0-f182.google.com [209.85.161.182]) by mx1.freebsd.org (Postfix) with ESMTP id 60CF88FC14 for ; Sat, 14 Aug 2010 18:42:31 +0000 (UTC) Received: by gxk24 with SMTP id 24so1834026gxk.13 for ; Sat, 14 Aug 2010 11:42:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=Ujw4AWim2xAlFdUfbkSjpkfB5Sk/8xAMj2p8VOxWQ00=; b=j54dUozA0N4OoORXVIAkCM+aCpsfIOZS6y5cIP2IYQreEnjMkzAhBGDwAKFy90K3eM Ra58AN21uKZbWK9PCiQe+qeEI7f7ikcvv0scEErRyU3dP5nHR0g42OajE/ruoeTZpFbp RNBqM1POWpMXrAIzFfysZqEVoXp9YuD7C33P4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=EeND9pbreXqHwlL/1VxLmpzesyUaZJmI2DlmgKkOns3LIG2EcSensm5Evgl4Pt1CZo lJ4atEXpPSNhrW3jfu9y/nzhHzi9mM0jdB4eqMpwPD6lWqDADCdmn8p2w7m2pELPxEkD ZGlTA7PHJWlCLvvs8NujIbXjJ4wKsPrzvKSJs= MIME-Version: 1.0 Received: by 10.150.2.19 with SMTP id 19mr3448942ybb.53.1281809707131; Sat, 14 Aug 2010 11:15:07 -0700 (PDT) Received: by 10.150.191.19 with HTTP; Sat, 14 Aug 2010 11:15:07 -0700 (PDT) In-Reply-To: <20100814172307.035661065697@hub.freebsd.org> References: <20100814172307.035661065697@hub.freebsd.org> Date: Sat, 14 Aug 2010 13:15:07 -0500 Message-ID: From: Noel Jones To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: Open Mail Relay X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Aug 2010 18:42:32 -0000 On Sat, Aug 14, 2010 at 8:29 AM, wrote: > > I have a machine running FreeBSD, sendmail and majordomo. =A0I have someo= ne who is on one of those majordomo lists complaining that they are receivi= ng spam from me. =A0The complainer says I have an open mail relay that I ne= ed to fix. Insufficient data. The person reporting the spam needs to provide you with a copy of the mail, including all headers, so you can see if it came from your server, or who sent it through your server. Most likely suspects are another list member's infected machine sending out spam to the list, or an outright forgery that never went through your server. > > I went to http://www.abuse.net/relay.htm= l to test the machine using its IP address. =A0Abuse.net gives a clean bill= of health, saying relaying was denied in 17 separate tests. Then it's unlikely your server is an open relay. But you may need to add some spam filtering to your lists, or at least restrict posting to members only. -- Noel Jones