CryWrap is a simple Unix service that sits over any simple TCP service such as POP3, IMAP, SMTP and encrypts all of the data on the connection using TLS/SSL. It can run as a standalone daemon, or from inetd, and can encrypt data for remote services too. . It works with the servers you already have and does not require any modifications to your existing servers. . CryWrap is intended to be a drop-in replacement for sslwrap.