Santa Monica, California-based Isocor has enhanced its Internet-intranet N-PLEX server software, adding LDAP, a Web-to-directory gateway and Java classes. Integrated applications in version 1.2 now include an Internet mail system, Internet Directory Server, message store, Web server and centralized management center. The server software natively supports SMTP/MIME, POP3, IMAP4, HyperText Transfer Protocol and X.400. Optional components include X.400 mail services, with gateway and message store for message exchange between Internet and X.400 users. The company claims that N-PLEX is optimized for a scalable, multi-threaded Windows NT and iAPX-86 architecture. N-Plex 1.2 costs between $4,500 and $125,000 for a single user, depending on machine classes and options. A Java application development kit is included.