We currently have have a mailbox that can send to all users. What I am wanting to do is to only allow management to send to mailboxes all. Is there a way to accomplish this? Thank you in advance, --Scott

Change the default limit in Exchange System Manager -> Global Settings -> Message Delivery -> Recipient limits or if you wanted to do it for individual usersADUC -> user properties -> Delivery Options -> Recipient limits

Clarify: what you want to do is, only allow specific user to send mail to all F21s solution is almost correct For exchange 2k3: 1. Go to ESM->Global Settings->Right-click Message Delivery->choose Properties 2. Go to Defaults tab->set a Maximum for all your users recipient limit 3. Now, Go to ADUC->Right-click your specific user-> choose Properties 4. Go to Exchange General tab->click Delivery Option->set Recipient Limit which will overwrite the limit in ESM 5. It will take a while to effect For exchange 2k7: 1. Go to EMC->Organization Configuration->Hub Transport->Global Setting tab 2. Right-click Transport Settings->choose properties 3. General tab->set a Maximum for all your users recipient limit 4. Go to Recipient Configuration->Mailbox-> Right-click your specific user-> choose Properties 5. Mail Flow Settings tab->choose Delivery Options then click Properties button 6. Set Recipient Limit which will overwrite the limit in Global Setting Notes: also you can use EMS to achieve all this by the link below http://technet.microsoft.com/en-us/library/bb310760(EXCHG.80).aspx