DEFCONF(user_extaddr_fixup, ${sg {$local_part_suffix}{^[-+]}{}})
## Other hosts allowed to relay mail through us.
-DEFCONF(relay_clients, +trusted)
+DEFCONF(relay_clients, <; +trusted ; 172.29.80.8)
## TLS-related settings. We're assuming GNUTLS here, rather than OpenSSL.
## For local connections we are very strict. For random clients, we try