extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
extern BOOL acl_temp_details; /* TRUE to give details for 4xx error */
extern tree_node *acl_var_c; /* ACL connection variables */
-extern tree_node *acl_var_m; /* ACL messsage variables */
+extern tree_node *acl_var_m; /* ACL message variables */
extern uschar *acl_verify_message; /* User message for verify failure */
extern string_item *acl_warn_logged; /* Logged lines */
extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */