the queue to be used for a message. A $queue_name variable gives
visibility.
- 6. The CHUNKING ESMTP extension from RFC 3030. May give some slight
+ 6. New expansion operators base32/base32d.
+
+ 7. The CHUNKING ESMTP extension from RFC 3030. May give some slight
performance increase and network load decrease. Main config option
chunking_advertise_hosts, and smtp transport option hosts_try_chunking
for control.