Bulk Mailbox creation with custom SMTP address & setting forwarder

Hi Experts,

I need to create bulk user and mailbox and also need to set forwarding address for that mailbox to contact object (Forward to) option.

I am able to create bulk AD user following the below script and also able to create mailbox following the mailbox creation script.

But I need to set custom SMTP address for those mailbox for that is there any way I can define in the mailbox creation script to add custom SMTP address?

Once the users mailbox will be created, Is there any way I can set forwarding address to a contact object of that user via power shell.

In my case, I just need to create mailbox for the internal domain and set to forwarder to the users contact object.    



Creating Active Directory user:

Import-csv C:\BulkADUsers.csv | % {New-ADUser -Name $_.Name -SamAccountName $_.SamAccountName -Description

$_.Description -Department $_.Department -Path $_.Path -Enabled $True -AccountPassword (ConvertTo-SecureString

$_.Password -AsPlainText -force)}

CSV Format for AD user:

Name              SamAccountName Description      Department      Path                  Enabled      Password
Test, User      Test            Test User       IT           OU=Test,DC=Test,DC=COM     $True   Pass3434@



Creating mailbox

Import-Csv .\BulkADUsersDB.csv  | % {Enable-Mailbox -Identity $_.SamAccountName -Database $_.Database -Alias $_.SamAccountName}

CSV Format for mailbox user:

Name              SamAccountName Description      Department      Path                Database      Enabled      Password
Test, User      Test            Test User       IT           OU=Testing,DC=Test,DC=COM  MDB01            $True   Pass3434@


By following the above script I am able to create user and mailbox but user mailbox is taking default  email address but I need to define custom SMTP address via power shell.

Also once users mailbox will be created, I need to set forwarding address for each users to each contact object via PowerShell..On this note, All contact object already exist in our internal domain.