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Thread: single to multi-server questions

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    another1 is offline New Member
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    Default single to multi-server questions

    We've been using a single-server installation. I'm wondering if a multi-server installation might be better for us.

    Our usage is low right now but will grow quickly. But I'm also interested in a more secure system.

    - How much better is multi-server security?
    Seems like it should be MUCH better b/c you can have a public-facing server and a more secure private.

    - What is the best initial set-up?
    It seems that given our low-medium usage, two servers would work fine for now, configured as:
    1) public facing: mta+proxy+ldap(replica)
    2) private facing (behind nat): mailstore+ldap+logger

    Any tips for set-up would be much appreciated. I have looked at documentation and forum posts but there always seems to be more to know, and I'd like to avoid 'gotcha's' if I can.

    Thanks in advance for any help.

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    Quote Originally Posted by another1 View Post
    We've been using a single-server installation. I'm wondering if a multi-server installation might be better for us.

    Our usage is low right now but will grow quickly. But I'm also interested in a more secure system.

    - How much better is multi-server security?
    Seems like it should be MUCH better b/c you can have a public-facing server and a more secure private.

    - What is the best initial set-up?
    It seems that given our low-medium usage, two servers would work fine for now, configured as:
    1) public facing: mta+proxy+ldap(replica)
    2) private facing (behind nat): mailstore+ldap+logger

    Any tips for set-up would be much appreciated. I have looked at documentation and forum posts but there always seems to be more to know, and I'd like to avoid 'gotcha's' if I can.

    Thanks in advance for any help.
    Multi-server security is neither better nor worse than single-server security. We recommend leaving SecureInterprocessSecurity set to Enabled as added protection (that's the default BTW).

    What you might want to consider is dropping a second MTA/LDAP replica in a second data center, so that if your first data center is taken offline you can at least continue to receive email. Plus, if you do any sort of D/R to the second data center, you'll be back up and running quickly if what took the primary data center offline resulted in a loss of your equipment there.

    Hope that helps,
    Mark

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