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Address rewriting on Edge Transport servers

    Question

  • Hi guys,

    I have some questions regarding address rewriting.

    today we have EDU and ADM users in our exchange organization and both are using the same smtp domain @domain.com.

    we need to hide our EDU smtpaddresses when communicating with external recipients.

    so if EDU user joe.smith@domain.com sends internal emails its all good but if it send an email outside of the organization we need it to look like abc123@domain.com. all ADM users shall continue to use their original address.

    I have read about the address rewriting if we implement an edge server. but do I need to create a rule for every one of the EDU users or can I create a rule on the edge server and via powershell trigger all EDU users that shall use this rule? and is it the proxyaddress attribute on the EDU users that shall be the abc123@domain.com format?

    the proxy address will only take affect when passing in our out via edge server and not be triggered internally since we want the EDU users to have their full address internal.

    thanks!

    Friday, February 24, 2017 7:57 AM

Answers

  • Hi, zid

    If edu and adm users are using @domain.com, how do you distinguish between them? Difference OU or Distribution Group?

    And you just want to change the first part (Alias) of SMTP address without domain.com, right? If so, we need to create separate Address Rewrite Entries for 4,000 users. Yes, 4,000 entries with the following similar command.

    New-AddressRewriteEntry -Name "joe.smith@company.com to u124345@company.com" -InternalAddress joe.smith@company.com -ExternalAddress u124345@company.com

    Why not just changing company.com to another domain name? That will be easy to implement in your situation.

    New-AddressRewriteEntry -Name "Company to Domain" -InternalAddress company.com -ExternalAddress domain.com


    Best Regards,

    Lynn-Li
    TechNet Community Support


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    • Marked as answer by [zid] Tuesday, February 28, 2017 9:10 AM
    Tuesday, February 28, 2017 9:09 AM
    Moderator

All replies

  • Why don't you just change their email addresses to .com and get rid of the .edu?

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Saturday, February 25, 2017 8:24 PM
    Moderator
  • everyone is using @domain.com... both edu and adm users...
    Monday, February 27, 2017 7:34 AM
  • So is there a good way for like 4,000 edu users?

    we don't wont to add like 4,000 rules for every users, that would be impossible to manage over time (when a new user joins/ends)

    so..

    adm users will keep their firstname.lastname@company.com both internal and external

    edu users will keep their firstname.lastname@company.com internally but will have to have a rewrite to a unrecognizable smtpaddress externaly like joe.smith@company.com will be converted to u124345@company.com

    Monday, February 27, 2017 12:43 PM
  • Hi, zid

    If edu and adm users are using @domain.com, how do you distinguish between them? Difference OU or Distribution Group?

    And you just want to change the first part (Alias) of SMTP address without domain.com, right? If so, we need to create separate Address Rewrite Entries for 4,000 users. Yes, 4,000 entries with the following similar command.

    New-AddressRewriteEntry -Name "joe.smith@company.com to u124345@company.com" -InternalAddress joe.smith@company.com -ExternalAddress u124345@company.com

    Why not just changing company.com to another domain name? That will be easy to implement in your situation.

    New-AddressRewriteEntry -Name "Company to Domain" -InternalAddress company.com -ExternalAddress domain.com


    Best Regards,

    Lynn-Li
    TechNet Community Support


    Please remember to mark the replies as answers.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    • Marked as answer by [zid] Tuesday, February 28, 2017 9:10 AM
    Tuesday, February 28, 2017 9:09 AM
    Moderator