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Exchange 2000 - change mail handling from internal to external provider?

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  • Exchange 2000 - change mail handling from internal to external provider?

    We are currently using Exchange 2000 to handle our internal/external mail for ourdomain.com. We work with another company who is taking over some of our internal network and mail is one of these items.

    Their external mail servers will now handle email for both ourdomain.com and theirdomain.com and theirdomain.com will become our default address. All email for both domains will need to be routed through their mail servers.

    I'm a little lost on what I need to do to ensure a smooth migration.

    So far, I know I need to:

    1. Point ourdomain.com MX records to their servers.
    2. Add theirdomain.com to our recipient policy and set it as the default SMTP address.
    3. Enable a smart host in the default SMTP server for their mail servers IP. Will this allow our server to pickup and send all email to their server for both domains?

    I'm a little confused and am used to working with a single-domain, self hosted email.

    Thanks for any help or guidance.

  • #2
    Re: Exchange 2000 - change mail handling from internal to external provider?

    If they are taking over your email, then shouldn't they be providing email server as well?
    While you can add the other domain to recipient policy, things become complicated with co-existence with another server. Exchange by default presumes that it is responsible for all email for a domain, so in the default configuration you will be unable to email users in the same domain located on the other server.
    You can disable the option for Exchange being responsible for all email on the domain, but this isn't 100% foolproof. If you create mail enabled contacts for users on the other server then the email can fail to be delivered correctly.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
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