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How to secure Exchange?

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I have an email exchange server setup to send and receive mail.

What points do i need to look into to secure it?

-DOS attack / firewall? Or maybe put exchange behind a firewall? Install a firewall on it? Maybe not such a good idea?

mm what else comes into mid for securing it?

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by mr.sweetchuck

Hi Dave,
Microsoft generally recomed that you have a front-end back-end server topology, (i.e. that you have a stripped down server that connects to the internet and a backend server that actually holds the Information Store. This is used to prevent DoS Attacks, although Exchange will work fine without it.

I would recomend having at least one firewall in place, i.e. firewall - front-end - backend or firewall - front-end - firewall - backend.

Keep your Anti-virus software up to date.

Microsoft have an application called ExBPA that checks Exchange to see if it configured to the best practice recomendations.

Hope this helps,
chuck.

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