Qpopper is a server that supports POP3 protocol for downloading Internet e-mailfrom software clients. Qpopper does not include a message transfer agent or SMTP support and normally works with standardUNIX mail transfer agents such as sendmail or smail. This server is fully compliant to RFC1939 and workswith all the known POP3 clients. No license agreement is required to use this server. Qpopper also supportsKerberos V4 if enabled. You can obtain a Kerberos engine for your system from the MIT Kerberos DistributionPage.