Date: Wed, 11 Nov 1998 10:22:23 +1100 (EST) From: "Daniel O'Callaghan" <danny@hilink.com.au> To: Juergen Nickelsen <ni@tellique.de> Cc: Chad Thunberg <chadth@atvideo.com>, freebsd-security@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: firewall + internal mail server Message-ID: <Pine.BSF.3.96.981111101405.14930A-100000@enya.hilink.com.au> In-Reply-To: <362F773A.AB9F196B@tellique.de>
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On Thu, 22 Oct 1998, Juergen Nickelsen wrote: > the external mail server, but it only forwards the mail to the > internal mail server.(*) The firewall also acts as FTP and WWW server, > but since the mail resides only for seconds on it, the risk is > minimized. > > As we are just a few people here yet, this is bearable, but for a > long-term solution I'll have to work out a sendmail configuration > where the mail exchanger for the domain delivers the mail to a > non-MX. I am sure there is a simple way, but I don't know it yet. In this situation I use the TryNullMXList option, and declare domain.com with the IP of the internal mail server, while the external mail server has the highest priority MX. TryNullMXList means "if I am the best MX for this domain, but don't handle the domain myself, try the domain as a host, rather than generating local config error". Works a treat! Danny To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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