Some of my users lately are receiving delivery status notifications failures when sending out invitations in calendar. The notification lists the recipients that did not receive the message, The strange thing is the user accountsthat are listed have been deleted from our Exchange servers for years... They were also not selected during the initial sending of the invite. Looked at all of event logs and see nothing... We're running Exchange 2003 SP2 on 2003 server. Any help would be great!!!

User is create new invitations direct in calendar to send out or modify existing invitation item ? If modify existing item,it may inclusde deleted recipient......

Jammy, No these are new invitations....