Version 5.5 provides a full-featured IMAP4 server, an LDAP directory service, and Web access to mail, scheduling, and discussion features. As a groupware package, though, Exchange still finds itself a length or two behind Lotus Notes.
Exchange is available in two versions.
Whereas other groupware products have optional gateways, Exchange includes more of them than you'll find in any other groupware or mail server product. We found Exchange one of the most sophisticated products in our groupware roundup but also one of the easiest to install and maintain. The download is small, and the pack is now included as part of Windows NT Server 4.0. Besides ASP, the pack installs necessary components such as Windows NT 4.0 Service Pack 3, IIS 4.0, and Internet Explorer. The wizard-based installation took just under 30 minutes to complete.