how to import x500 addresses into the proxyaddreses attribute from a CSV?

There is no exchange management shell just AD & Quest cmdlets to work with.
Thank you.
K BAsked:
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Jeremy WeisingerSenior Network Consultant / EngineerCommented:
You can do it with the Set-ADUser cmdlet. E.g.:

Set-ADUser test1 -Add @{proxyAddresses="X500:/o=<org name>/ou=<site name>/cn=Recipients/cn=test1"}

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Jason CrawfordTransport NinjaCommented:
Following up on Jeremy's script.  If you need it to read from a .csv file try this:

Create a .csv file with a column labelled Username and another labelled X500.  Save the user details in this .csv file on the DC.  Run this script:

Import-Module activedirectory

$users = Import-Csv users.csv

$users | ForEach-Object {
    Set-ADUser $users.username -Add {proxyAddresses=$users.x500 -WhatIf}

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I don't have a sandbox to work with at the moment so I can't test it.  I appended everything with a -WhatIf so it won't change anything but will let you know of any errors it might contain.

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