Dear all,Ineed to set the CustomAttribute3 to multiple mailboxes in the same database but i need to make the customattribute3 different in each user to be UserAlias@domain.comso i make the following Get-Mailboxes -database XXXXX | Set-Mailbox -CustomAttribute3 "%m@domain.com "i supposed that %m=Alias but unfortunately %m didn't replaced by every user aliasso any idea??Best Regards,mwahab

Get-Mailboxes -database XXXXX| foreach { $a=$_.alias,"@domain.com"; $b =[string]::join("", $a); Set-Mailbox $_.alias -CustomAttribute3 $b }I hope you like this..!! ;)Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com

Amitreally you areamazing .......i don't have words to thank u ...........thank u man you are the best :)....but could u tell me and all of members here how could we learn the powershell ??? and where could we find help regarding the powershell scripting ??Best Regards,mwahab

My pleasure, mate...Here are some of the secrets...~ You can startpowershelllearning with help file which has some nice tips & tricks...WindowsPowerShellGraphical Help Filehttp://www.microsoft.com/downloads/details.aspx?FamilyId=3B3F7CE4-43EA-4A21-90CC-966A7FC6C6E8&displaylang=en~ Then you can jump towards Exchange, here is a TechNet help about EMS...Using the Exchange Management Shellhttp://technet.microsoft.com/en-us/library/bb123778.aspx~ Regularly practice and learn new things or tips & tricks by using various ready-made functions, statements and operators...Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com