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we migrated exchange several times the last few years to the latest version now 2013 exchange, but still some old problems appear, like mailboxes / accounts that were renamed long ago, because of new employees took over a job and accounts were cleaned and renamed to the new user/employee name, still somewhere the old name pop up for example in webmail sometimes, HOW DO WE get this out, were it is stored in exchanges these names ??
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we migrated exchange several times the last few years to the latest version now 2013 exchange, but still some old problems appear, like mailboxes / accounts that were renamed long ago, because of new employees took over a job and accounts were cleaned and renamed to the new user/employee name, still somewhere the old name pop up for example in webmail sometimes, HOW DO WE get this out, were it is stored in exchanges these names ??

mailbox changed but still visable

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.