extern uschar *helo_lookup_domains; /* If these given, lookup host name */
extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
extern BOOL helo_verified; /* True if HELO verified */
extern uschar *helo_lookup_domains; /* If these given, lookup host name */
extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
extern BOOL helo_verified; /* True if HELO verified */