Hello, In my "organization" we have 20% of Exchange accounts (Exch sever 2007)and 80% Linux Accounts. The Linux accounts are mail contact (New mail user & New mail contact). 1- I need to add in theMailbox User Properties in Custom attributes 2 the mention "LINUX" for the mail contact (New mail user & New mail contact).2- And need to do the same with all the mailbox but add the mention "EXCHANGE"http://media.techtarget.com/digitalguide/images/Misc/bg_ch03_10.jpgDoes anyone know a shell command that would do the job??Thanks in advance

Hi,So this is the 2nd part of your earlier query of making DLs for linux users.Have a look into this http://blogs.technet.com/isingh/archive/2007/02/18/adding-custom-attributes-in-active-directory.aspx.Also make sure you back your registry before making any changes.Not sure but can have a look into this also.http://forums.techarena.in/active-directory/1192191.htm Raj

1- I need to add in theMailbox User Properties in Custom attributes 2 the mention "LINUX " for the mail contact (New mail user & New mail contact). Do you mean to say MailContacts User Properties? Just query all Mailcontacts and MailUsers from AD with CmdLets and pipe the result to Set-MailContact and Set-MailUser. try below for Contacts and for MailUsers Get-MailContact -ResultSize Unlimited | Set-MailContact -CustomAttribute2 "LINUX" Get-MailUser -ResultSize Unlimited | Set-MailUser -CustomAttribute2 "LINUX" and For mailbox to fix CA2 as Exchange... Get-Mailbox -ResultSize Unlimited | Set-Mailbox -CustomAttribute2 "EXCHANGE" Hope This helps. Thanks. Vishal Ramnani | MCITP - Exchange 2007 | MCSE Messaging | MCTS - Win 2008 Config