Hi All I have set up some dynamic mail distributions groups but there are 5 users i need to exclude from this. I have modified the custom attibutes of the mailboxes that I wish to remove but need then to set the condition to exclude. Im thinking that i'm going to have use powershell for this using something along the lines of: Set-DynamicDistributionGroup -Identity "All" -RecipientFilter {-not(Name -like '<user mailbox name>')} Any ideas would be greatly appriciated. Thanks Martin

Hello Martin, Yes you can use powershell cmdlet to exclude users like this but you need to give full syntax in -RecipientFilter command to include users based on filter and to exclude mentioned users. Refer similar thread... http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=3747135&SiteID=17