+void process_rfc822_addr(const char *rfc822, char *user, char *node, char *name);
+char *rfc822_fetch_field(const char *rfc822, const char *fieldname);
+void sanitize_truncated_recipient(char *str);
+char *qp_encode_email_addrs(char *source);
+int alias (char *name);
+
+
+int IsDirectory(char *addr, int allow_masq_domains);