OT - setting up mailertable

[Venkata Achanta]

Greeting all,

we have multiple exchange servers at our site and i am trying to build some
redundacy/fault tolerance into the system, i mean if one exchange goes down
for some reason mail should be routed to the another available server and
the only place i see it is using the mailertable. Linux box running MS is
our favourite E-mail gateway thats by default ;-)

/etc/mail/mailertable

xyz.com esmtp:[1.1.1.1]
xyz.com esmtp:[2.2.2.2]
xyz.com esmtp:[3.3.3.3]
xyz.com esmtp:[4.4.4.4]
xyz.com esmtp:[5.5.5.5]

but i am getting the following error
makemap: /etc/mail/mailertable: line2: key xyz.com: duplicate key

I googled around and found nothing useful regarding this,thought i could
find some advice.

Please advice

Thanks much,
Venkata Achanta

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