Hi,I am loking for a solution by which I can restrict some exchange 2007 email account to send email on specific hours or set a time table to restrict them in sending email.I will be very thankful if someone can help me in this regard.Regards.

You can create a DL for those accounts, and a transport rule to bounce email sent by members of that DL. Then create scheduled tasks to enable/disable that rule.

Or you can use cmdlet Set-CASmailbox with parameter -MAPIEnabled or -OWAEnabled and other parameter.Then create a Schedule Task to run the script to enable or disable mailbox access.About Set-CASmailbox:http://technet.microsoft.com/en-us/library/bb125264(EXCHG.80).aspxHow To: Schedule PowerShell Script for an Exchange Taskhttp://exchangeshare.wordpress.com/2008/12/08/how-to-schedule-powershell-script-for-an-exchange-task/ Frank Wang

thank you for your reply. but how can I set a scheduled task to enable or disable the rule?

The EMS cmdlets are: enable-transportrule <rule name> disable-transportrule <rule name> You'll need to launch powershell with the same options used to launch the Exchange Management Shell so you have the Exchange cmdlets available. I don't have those on hand (maybe somebody can provide them), but it would be the same commandline used to launce the EMS from the icon. I usually just open up the EMS, run [environment]::commandline and copy/past the result. That, appended with -command {enable-transportrule <rule name>} and -command {disable-transportrule <rule name>} should do it.

thank you for your reply. but how can I set a scheduled task to enable or disable the rule? Hi, How to set a scheduled task, please have a look at the link which I gave you. How To: Schedule PowerShell Script for an Exchange Task http://exchangeshare.wordpress.com/2008/12/08/how-to-schedule-powershell-script-for-an-exchange-task/Frank Wang