1 Software Microsoft Exchange Microsoft Exchange Public Software Active a year ago Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs... View more Public Software Organizer: Organized by Public Software Group Description Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusively on Windows Server operating systems. Leave Group Are you sure you want to leave ? Feed Discussions Members 2 Photos Albums Reply To: Mailboxes cant be found / accessed