Log Message:
Update mail/postfix to 3.2.0.

- Elliptic curve negotiation with OpenSSL >= 1.0.2. This changes the
  default smtpd_tls_eecdh_grade setting to "auto", and introduces a
  new parameter tls_eecdh_auto_curves with the names of curves that may
  be negotiated.
- Stored-procedure support for MySQL databases.
- Cidr: table support for if/endif and negation (by prepending ! to a
  pattern), just like regexp: and pcre: tables. See the cidr_table(5)
  manpage for details.
- The postmap command and the inline: and texthash: maps now support
  spaces in left-hand field of lookup table source text. Use double
  quotes (") around a left-hand field that contains spaces, and use
  backslash (\) to protect quotes in a left-hand field.
- Support for per-client Milter configuration (smtpd_milter_maps) that
  overrides the main.cf smtpd_milters setting, and that has the same
  syntax. A lookup result of "DISABLE" turns off Milter support for that
  client.
- The local SMTP server IP address and port are available in the
  policy delegation protocol (attribute names: server_address,
  server_port), in the Milter protocol (macro names: {daemon_addr},
  {daemon_port}), and in the XCLIENT protocol (attribute names:
  DESTADDR, DESTPORT).
- For safety reasons, the Postfix sendmail -C option must specify an
  authorized directory: the default configuration directory, a
  directory that is listed in the default main.cf file with
  alternate_config_directories or multi_instance_directories, otherwise
  the command must be invoked with root privileges. This mitigates a
  recurring "jail break" problem with the PHP mail() function.
- "PASS" and "STRIP" actions in header/body_checks. \ 
"STRIP" is similar
  to "IGNORE" but also logs the action, and "PASS" disables \ 
header,
  body, and Milter inspection for the remainder of the message content.
- The collate.pl script by Viktor Dukhovni for grouping Postfix
  logfile records into "sessions" based on queue ID and process ID
  information, in the auxiliary/collate directory of the Postfix source
  tree.

Disabled or removed behavior:
- SMTPUTF8 support: Postfix 3.2 disables the 'transitional'
  compatibility between the IDNA2003 and IDNA2008 standards for
  internationalized domain names (domain names beyond the limits of
  US-ASCII). This makes Postfix behavior consistent with contemporary
  web browsers.
- Postfix 3.2 removes tentative features that were implemented before
  the DANE spec was finalized: support for certificate usage
  PKIX-EE(1), the ability to disable digest agility, and the ability to
  disable support for "TLSA 2 [01] [12]" records that specify the digest
  of a trust anchor.