extern BOOL smtp_etrn_serialize; /* Only one at once */
extern FILE *smtp_in; /* Incoming SMTP input file */
extern BOOL smtp_in_pipelining_advertised; /* server advertised PIPELINING */
+extern BOOL smtp_in_pipelining_used; /* server noted client using PIPELINING */
extern int smtp_load_reserve; /* Only from reserved if load > this */
extern int smtp_mailcmd_count; /* Count of MAIL commands */
extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */