-#define POP_NO_GSSAPI (1<<3) /* don't use the GSSAPI */
-#define POP_NO_NOPROT (1<<4) /* prohibit no protection; this *only* */
- /* makes sense if you use GSSAPI */
-#define POP_NO_INTEG (1<<5) /* don't use plain integrity */
-#define POP_NO_ENCRYPT (1<<6) /* don't use encryption */
-
-/*
- * GSSAPI documentation
- *
- * This version will attempt to perform a GSSAPI handshake first; if this
- * fails, then it will attempt standard POP authentication. Note that
- * library conflicts may prevent the use of this with the Kerberos
- * kpop hack.
- *
- * If you specify POP_NO_NOPROT and this library is unable to provide either
- * integrity protection or encryption, pop_open() will fail. The pop_open()
- * call will attempt the highest level protection available; i.e., if both
- * server and client support encryption (and you do not provide the
- * POP_NO_ENCRYPT flag), that will be used; if both server and client support
- * integrity protection (and you do not provide the POP_NO_INTEG flag), that
- * will be used. If neither of these are available, and you have not
- * specified the POP_NO_NOPROT flag, then this will be a normal, unprotected
- * connection.
- */