On Tue, 2005-04-19 at 09:45 -0400, Reuben D. Budiardja wrote:
Hello,
I have my own domain, let's say: myrealname.org. I already set up a mail server (mail.myrealname.org) and MX record for that domain, with MX = 10 and it works just fine.
What I need help is with the following. I want to setup a backup mail server with MX = 20, so in case the main mail server is down, the backup mail server will collect the incoming mail. The backup mail server, let's call it myothermachine.org is on another network. How do I set up the backup mail server (using sendmail) to do the following
You may want to think about that since backup mx is a spam magnet. These days servers re-try for long enough durations to eliminate the need for backup mx.
That's a good point; any backup MX should have exactly the same spam blocking setup as the main MX, and ideally, it should have knowledge of the valid users for the domain so that it can reject mail to invalid users and hence avoid generating backscatter (see also http://www.techzoom.net/paper-mailbomb.asp).
Paul.
