[KLUG Members] Creating a mail server cluster

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Hello
I currently have sendmail running together with a DNS server on my linux box. I
can connect to my mail server using POP3 .

The problem is I need an additional linux box running Suse with a backup
mailserver and a second installation of BIND.

I want users to see just one interface to the servers and I want the servers to
back each other up. So if one dns/mailserver fails the other still supports the
system.

I know you can redirect mail from one server to another using the 'MAIL_HUB' and
'stickyhost' directive but it isn't clear that this will provide the clustering
I need between the mail servers. It seems that mail simply gets passed from  
the first mail server to the second but with unmatched messages being relayed.

Is there any standard documentation relating to this?

Thanks!

Regards,

Komal

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