also be defined, e.g. "PDT"
+  *
+  * Define USA if you are using US/NorthAmerican time zone abbreviations.
+  * If USA is not defined, dates in outgoing mail will include timezones
+  * specified as offsets from GMT, e.g. Pacific Standard Time is -0800.
+  */
+ /* #define TIMEZONE T->tm_zone /**/
+ /* #define USA /**/
+ 
+ /* mail delivery system macros and defines... */
+ 
+ /*
+  * For POP3_SUPPORT, define this.  Mush will act as a POP-3 client,
+  * periodically calling the server on the machine described by the
+  * environment variable MAILHOST to pick up new mail.
+  */
+ #define POP3_SUPPORT /**/
+ #ifdef POP3_SUPPORT
+ #define HOMEMAIL
+ #endif /* POP3_SUPPORT */
+ 
+ /*
+  * If you are using MMDF, define MMDF here.
+  */
+ /* #define MMDF /**/
+ #if defined(M_UNIX) && defined(M_XENIX)
+ #define MMDF
+ /* #define M_EXECMAIL	/* Define if you haven't fixed submit permissions */
+ #endif /* M_UNIX && M_XENIX */
+ #ifdef MMDF
+ /*
+  * If MMDF delivers mail the user's home directory, define HOMEMAIL.
+  * Also check the definition of the delivery file name MAILFILE, below.
+  */
+ /* #define HOMEMAIL /**/
+ #ifdef M_EXECMAIL
+ #define MAIL_DELIVERY	"/usr/lib/mail/execmail"
+ # define VERBOSE_ARG	"-v"
+ # define METOO_ARG	"-m"
+ #else /* M_EXECMAIL */
+ #define MAIL_DELIVERY	"exec /usr/mmdf/bin/submit -mlnr"
+ #define VERBOSE_ARG	"Ww"
+ #define MTA_EXIT	9	/* exit status for successful submit */
+ #endif /* M_EXECMAIL *