Thanks!!

One more question. The secondary email must be in form: firstname.lastname@domain.com. How to do this?

Get-Mailbox -ResultSize Unlimited -Filter {CustomAttribute1 -eq "value"} | foreach {
$user = get-user $_
$email = "{0}.{1}@domain.com" -f $user.firstName,$user.lastName
$_.EmailAddresses+= $email
$_
} | Set-Mailbox

Posted By Shay on 02 Dec 2009 02:57 AM
Get-Mailbox -ResultSize Unlimited -Filter {CustomAttribute1 -eq "value"} | foreach {
$user = get-user $_
$email = "{0}.{1}@domain.com" -f $user.firstName,$user.lastName
$_.EmailAddresses+= $email
$_
} | Set-Mailbox

Many thanks to you! That works just as i wanted! Need to learn PowerShell too.

That code worked fine but when users name contains scandinavian letter (Ä, Ö, Å) then it will fail. How it it possible to replace Ä and Å with A and Ö with O?

I am trying to do something similar, but many of my users' email addresses are not our standard nickname@domain.com. How can I add a new address that matches the users current primary smtp with a diffferent email domain. So that user jdoe@domain.com gets jdoe@newdomain.com and janed@domain.com gets janed@newdomain.com?

I have a similar issue as well, however, we have a large number of exchange servers on our domain, and I wish to add an smtp name to only the users on one of them (the admins of the others would NOT be happy if I messed with theirs).

mine would be roughly (I think, I NO KNOW CODE)

[PS] C:\>Get-Mailbox -Filter { CustomAttribute5 -eq "sub.domain"} | foreach {
$user = (Get-user $_.Domain).Domain
$email1= "$user@Sub.Domain.com"
$_.emailAddresses += ($email1)
Set-Mailbox $_ -emailAddresses $_.emailAddresses

Am I parsing that correctly?
       We just did an exchange server migration under the direction of a Higher Organziation, and they changed everyone's Primary SMTP to A.Domain.com, with B.Domain.com and Domain.com as secondary SMTPs; however, the Primary SMTP of many of our users (several hundred) was Sub.Domain.com prior to the migration, which is not in the smtp anywhere. I need to add Sub.Domain.com as a secondary smtp to all the users, so that they recieve any mail sent to them under the old addresses.
       Add to this that we have a huge domain subdivided into massive OUs as opposed to a tree as most sensible Admins would do, and my needing to do this only to my small part of it (One of 9 Exchange servers on the domain) and I'm having trouble.
       I have very little experiance scripting and have never used the PowerShell before so I am understandably nervous.
       Thanks in advance :)

Crap: I did not realize this Google-found thread was not the one on the front page.
I must apologise for thread resurrection.
Now, should I wait for a response in the zombie thread, or repost in the new smtp thread. . .
grrr.

$SecPass = convertto-securestring -asplaintext -string "password" -force

   
$PSCredential = new-object System.Management.Automation.PSCredential -argumentlist "user@something.dk",$SecPass

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $PSCredential -Authentication Basic -AllowRedirection
Set-ExecutionPolicy RemoteSigned
 Import-PSSession $Session

$users = Get-Mailbox
foreach ($a in $users) {$a.emailaddresses.Add("$($a.alias)@alias.something.dk")}
$users | %{Set-Mailbox $_.Identity -EmailAddresses $_.EmailAddresses}


I have made something very similiar to the above and it works fine.
But I am unsure of how I should validate it agains if the mailbox already has that alias
Because there is a tendency for it to create additional aliases each time I run the script.

Example: In Live Edu there exists main ID user@something.dk
Aliases:
user@alias.something.dk
user@alias1.something.dk


any suggestions?

I have two email policies. one is the default policy and the other is for second email address. Users with second email address are signed a custom attribute 10. But some users with the second email were not signed this custom attribute because the second email address was added manually. Can I get a script which will let me see all the users with second email but do not have the custom attribute 10 signed. The second email domain is say testonline.com and the custom attribute is testonline.
Thanks