From owner-freebsd-newbies Thu Jun 15 9: 2:16 2000 Delivered-To: freebsd-newbies@freebsd.org Received: from phoenix.ea4els.ampr.org (160-MADR-X50.libre.retevision.es [62.82.52.160]) by hub.freebsd.org (Postfix) with ESMTP id 1E25737B516 for ; Thu, 15 Jun 2000 09:02:13 -0700 (PDT) (envelope-from sjmudd@pobox.com) Received: by phoenix.ea4els.ampr.org (Postfix, from userid 507) id 0A3DA8385; Wed, 14 Jun 2000 22:06:57 +0200 (CEST) To: freebsd-newbies@freebsd.org Subject: Re: postfix as a backup mx References: <4.3.1.2.20000614165305.0226f700@mail.Go2France.com> From: Simon J Mudd Date: 14 Jun 2000 22:06:57 +0200 In-Reply-To: lconrad@Go2France.com's message of "14 Jun 2000 18:03:38 +0200" Message-ID: Lines: 27 X-Mailer: Gnus v5.7/Emacs 20.5 Sender: owner-freebsd-newbies@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org lconrad@Go2France.com (Len Conrad) writes: > mydomain.com. MX 10 mymail.mydomain.com > mydomain.com. MX 20 postfix.mydomain.com > > In main.cf, from http://postfix.eu.org/uce.html > > "permit_mx_backup = yes > > Permit the request when the local mail system is MX host for the resolved > destination. IMHO you should NOT do it this way. This way ANYONE can define your mail server as a MX host for their domain and you will act as a relay for that domain. This is dangerous. What you should really do is modify relay_domains and explicitly state which domains you want to relay. e.g. relay_domains = $mydomain, clientdomain1.com, clientdomain2.com Regards, Simon -- Simon J Mudd, Madrid SPAIN Tel: +34-91-408 4878 email: sjmudd@pobox.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message