Date: Tue, 8 Nov 2005 12:23:52 +0000 From: Brian Candler <B.Candler@pobox.com> To: dungkaitai <dungkaitai@hk-cse.dyxnet.com> Cc: freebsd-isp@freebsd.org Subject: Re: Backup/Secondary relay server (mailertable) Message-ID: <20051108122352.GB58984@uk.tiscali.com> In-Reply-To: <20051107235736.M27385@hk-cse.dyxnet.com> References: <20051107235736.M27385@hk-cse.dyxnet.com>
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On Tue, Nov 08, 2005 at 07:59:39AM +0800, dungkaitai wrote: > I wanted to know how should the backup/secondary relay server should be setup. (1) Install Exim. You won't regret it. # cd /usr/ports/mail/exim # make all install clean [/etc/mail/mailer.conf] sendmail /usr/local/sbin/exim send-mail /usr/local/sbin/exim mailq /usr/local/sbin/exim # /etc/rc.d/sendmail stop [/etc/rc.conf] sendmail_enable="NONE" exim_enable="YES" # /usr/local/etc/rc.d/exim.sh start (2) Edit /usr/local/etc/exim/configure, find this line, and list the domains you wish to allow backup MX for: domainlist relay_to_domains = foo.com : bar.com (3) # /usr/local/etc/rc.d/exim.sh restart (4) relax :-) Exim is the Swiss-army knife of MTAs. You can easily replace that configuration line with a database lookup (so you can act as backup MX for tens of thousands of domains), or set it to act as backup MX for anyone who lists your server in the DNS as a secondary MX: domainlist relay_to_domains = @mx_secondary See /usr/local/share/doc/exim/spec.txt for full details. Regards, Brian.
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