Hi,I am using the Microsoft Exchange Server 2007. i got one user everytimes send out an email he will receive the Email Delivery notice, if send to internal people he will get the Delivery notice generated by the Exchange Server and send to outside people he will get the notice with Postmaster.Another user dont have this problem, and also already uncheck the 'Allow Delivery reports' which under the Server Configuration-->Hub Transport-->Remote Domains. Anyone know what is the problem??Thanks for help!

Does he receive a delivery notice if he sends email via OWA? If not, he's probably got his Outlook set to request them by default on send messages.

Can you reproduce the issue when using OWA? If not, we could consider this is a client side issue.