-diff -urNp -x '*.orig' postfix-3.7.0.org/conf/main.cf postfix-3.7.0/conf/main.cf
---- postfix-3.7.0.org/conf/main.cf 2021-12-22 23:49:37.000000000 +0100
-+++ postfix-3.7.0/conf/main.cf 2022-04-04 19:57:04.594313194 +0200
-@@ -62,7 +62,7 @@ command_directory = /usr/sbin
+diff -ur postfix-3.10.6.orig/conf/main.cf postfix-3.10.6/conf/main.cf
+--- postfix-3.10.6.orig/conf/main.cf 2025-10-23 21:51:44.000000000 +0200
++++ postfix-3.10.6/conf/main.cf 2025-11-29 12:45:04.962284755 +0100
+@@ -62,7 +62,7 @@
# daemon programs (i.e. programs listed in the master.cf file). This
# directory must be owned by root.
#
# The data_directory parameter specifies the location of Postfix-writable
# data files (caches, random numbers). This directory must be owned
-@@ -86,7 +86,7 @@ mail_owner = postfix
+@@ -86,7 +86,7 @@
# These rights are used in the absence of a recipient user context.
# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
#
# INTERNET HOST AND DOMAIN NAMES
#
-@@ -118,7 +118,7 @@ mail_owner = postfix
+@@ -118,7 +118,7 @@
# myorigin also specifies the default domain name that is appended
# to recipient addresses that have no @domain part.
#
#myorigin = $mydomain
# RECEIVING MAIL
-@@ -407,7 +407,7 @@ unknown_local_recipient_reject_code = 55
+@@ -407,7 +407,7 @@
# "postfix reload" to eliminate the delay.
#
#alias_maps = dbm:/etc/aliases
#alias_maps = hash:/etc/aliases, nis:mail.aliases
#alias_maps = netinfo:/aliases
-@@ -418,7 +418,7 @@ unknown_local_recipient_reject_code = 55
+@@ -418,7 +418,7 @@
#
#alias_database = dbm:/etc/aliases
#alias_database = dbm:/etc/mail/aliases
#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
# ADDRESS EXTENSIONS (e.g., user+foo)
-@@ -446,7 +446,7 @@ unknown_local_recipient_reject_code = 55
+@@ -446,7 +446,7 @@
# UNIX-style mailboxes are kept. The default setting depends on the
# system type.
#
#mail_spool_directory = /var/spool/mail
# The mailbox_command parameter specifies the optional external
-@@ -468,8 +468,8 @@ unknown_local_recipient_reject_code = 55
+@@ -468,8 +468,8 @@
# IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN
# ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.
#
# The mailbox_transport specifies the optional transport in master.cf
# to use after processing aliases and .forward files. This parameter
-@@ -641,45 +641,24 @@ debugger_command =
- # -dmS $process_name gdb $daemon_directory/$process_name
- # $process_id & sleep 1
-
-+biff = no
-+
+@@ -644,44 +644,22 @@
# INSTALL-TIME CONFIGURATION INFORMATION
#
# The following parameters are used when installing a new Postfix version.
+setgid_group = maildrop
-# html_directory: The location of the Postfix HTML documentation.
--#
++# The unknown_address_reject_code parameter specifies the SMTP server
++# response when a client violates the reject_unknown_sender_domain
++# or reject_unknown_recipient_domain restrictions.
+ #
-html_directory =
-
-# manpage_directory: The location of the Postfix on-line manual pages.
--#
++# Contrary to what Wietse thinks (450) this should be 550
+ #
-manpage_directory =
-+inet_protocols = ipv4
++unknown_address_reject_code = 550
-# sample_directory: The location of the Postfix sample configuration files.
-# This parameter is obsolete as of Postfix 2.1.
-+# The unknown_address_reject_code parameter specifies the SMTP server
-+# response when a client violates the reject_unknown_sender_domain
-+# or reject_unknown_recipient_domain restrictions.
- #
+-#
-sample_directory =
-
-# readme_directory: The location of the Postfix README files.
-+# Contrary to what Wietse thinks (450) this should be 550
- #
+-#
-readme_directory =
--inet_protocols = ipv4
-+unknown_address_reject_code = 550
-diff -urNp -x '*.orig' postfix-3.7.0.org/src/global/mail_params.h postfix-3.7.0/src/global/mail_params.h
---- postfix-3.7.0.org/src/global/mail_params.h 2022-01-24 01:03:32.000000000 +0100
-+++ postfix-3.7.0/src/global/mail_params.h 2022-04-04 19:57:04.594313194 +0200
-@@ -107,7 +107,7 @@ extern uid_t var_owner_uid;
++biff = no
+ inet_protocols = ipv4
+ shlib_directory = /usr/lib/postfix/${mail_version}
+ meta_directory = /etc/postfix
+diff -ur postfix-3.10.6.orig/src/global/mail_params.h postfix-3.10.6/src/global/mail_params.h
+--- postfix-3.10.6.orig/src/global/mail_params.h 2025-10-24 16:41:15.000000000 +0200
++++ postfix-3.10.6/src/global/mail_params.h 2025-11-29 12:43:48.478151951 +0100
+@@ -107,7 +107,7 @@
extern gid_t var_owner_gid;
#define VAR_SGID_GROUP "setgid_group"
extern char *var_sgid_group;
extern gid_t var_sgid_gid;
-diff -urNp -x '*.orig' postfix-3.7.0.org/src/util/sys_defs.h postfix-3.7.0/src/util/sys_defs.h
---- postfix-3.7.0.org/src/util/sys_defs.h 2021-12-05 19:59:27.000000000 +0100
-+++ postfix-3.7.0/src/util/sys_defs.h 2022-04-04 19:57:04.595313196 +0200
+diff -ur postfix-3.10.6.orig/src/util/sys_defs.h postfix-3.10.6/src/util/sys_defs.h
+--- postfix-3.10.6.orig/src/util/sys_defs.h 2025-01-03 19:19:26.000000000 +0100
++++ postfix-3.10.6/src/util/sys_defs.h 2025-11-29 12:43:48.482151958 +0100
@@ -61,7 +61,7 @@
#define ALIAS_DB_MAP DEF_DB_TYPE ":/etc/mail/aliases" /* OpenBSD 2.7 */
#endif