postfix: version update to 3.0.3.

Some minor issues fixed.
SMTPUTF8 support option added (by Val Kulkov). Disabled by default because of icu library size.

mail/postfix/files/main.cf.default

@@ -254,7 +254,7 @@ lmtp_tls_CAfile =
 lmtp_tls_CApath =
 lmtp_tls_block_early_mail_reply = no
 lmtp_tls_cert_file =
-lmtp_tls_ciphers = export
+lmtp_tls_ciphers = medium
 lmtp_tls_dcert_file =
 lmtp_tls_dkey_file = $lmtp_tls_dcert_file
 lmtp_tls_eccert_file =
@@ -268,11 +268,11 @@ lmtp_tls_key_file = $lmtp_tls_cert_file
 lmtp_tls_loglevel = 0
 lmtp_tls_mandatory_ciphers = medium
 lmtp_tls_mandatory_exclude_ciphers =
-lmtp_tls_mandatory_protocols = !SSLv2
+lmtp_tls_mandatory_protocols = !SSLv2, !SSLv3
 lmtp_tls_note_starttls_offer = no
 lmtp_tls_per_site =
 lmtp_tls_policy_maps =
-lmtp_tls_protocols = !SSLv2
+lmtp_tls_protocols = !SSLv2, !SSLv3
 lmtp_tls_scert_verifydepth = 9
 lmtp_tls_secure_cert_match = nexthop
 lmtp_tls_security_level =
@@ -306,8 +306,8 @@ local_transport = local:$myhostname
 luser_relay =
 mail_name = Postfix
 mail_owner = postfix
-mail_release_date = 20150208
-mail_version = 3.0.0
+mail_release_date = 20151010
+mail_version = 3.0.3
 mailbox_command =
 mailbox_command_maps =
 mailbox_delivery_lock = fcntl, dotlock
@@ -415,7 +415,7 @@ postscreen_use_tls = $smtpd_use_tls
 postscreen_watchdog_timeout = 10s
 postscreen_whitelist_interfaces = static:all
 prepend_delivered_header = command, file, forward
-process_id = 25939
+process_id = 13574
 process_id_directory = pid
 process_name = postconf
 propagate_unmatched_extensions = canonical, virtual
@@ -511,7 +511,7 @@ smtp_body_checks =
 smtp_cname_overrides_servername = no
 smtp_connect_timeout = 30s
 smtp_connection_cache_destinations =
-smtp_connection_cache_on_demand = yes
+smtp_connection_cache_on_demand = no
 smtp_connection_cache_time_limit = 2s
 smtp_connection_reuse_count_limit = 0
 smtp_connection_reuse_time_limit = 300s
@@ -586,7 +586,7 @@ smtp_tls_CAfile =
 smtp_tls_CApath =
 smtp_tls_block_early_mail_reply = no
 smtp_tls_cert_file =
-smtp_tls_ciphers = export
+smtp_tls_ciphers = medium
 smtp_tls_dcert_file =
 smtp_tls_dkey_file = $smtp_tls_dcert_file
 smtp_tls_eccert_file =
@@ -600,11 +600,11 @@ smtp_tls_key_file = $smtp_tls_cert_file
 smtp_tls_loglevel = 0
 smtp_tls_mandatory_ciphers = medium
 smtp_tls_mandatory_exclude_ciphers =
-smtp_tls_mandatory_protocols = !SSLv2
+smtp_tls_mandatory_protocols = !SSLv2, !SSLv3
 smtp_tls_note_starttls_offer = no
 smtp_tls_per_site =
 smtp_tls_policy_maps =
-smtp_tls_protocols = !SSLv2
+smtp_tls_protocols = !SSLv2, !SSLv3
 smtp_tls_scert_verifydepth = 9
 smtp_tls_secure_cert_match = nexthop, dot-nexthop
 smtp_tls_security_level =
@@ -692,7 +692,7 @@ smtpd_tls_ask_ccert = no
 smtpd_tls_auth_only = no
 smtpd_tls_ccert_verifydepth = 9
 smtpd_tls_cert_file =
-smtpd_tls_ciphers = export
+smtpd_tls_ciphers = medium
 smtpd_tls_dcert_file =
 smtpd_tls_dh1024_param_file =
 smtpd_tls_dh512_param_file =
@@ -706,8 +706,8 @@ smtpd_tls_key_file = $smtpd_tls_cert_file
 smtpd_tls_loglevel = 0
 smtpd_tls_mandatory_ciphers = medium
 smtpd_tls_mandatory_exclude_ciphers =
-smtpd_tls_mandatory_protocols = !SSLv2
-smtpd_tls_protocols =
+smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
+smtpd_tls_protocols = !SSLv2, !SSLv3
 smtpd_tls_received_header = no
 smtpd_tls_req_ccert = no
 smtpd_tls_security_level =