-diff -dur postfix-2.1.3.orig/src/global/mail_params.h postfix-2.1.3/src/global/mail_params.h
---- postfix-2.1.3.orig/src/global/mail_params.h 2004-06-22 14:20:57.890585644 +0200
-+++ postfix-2.1.3/src/global/mail_params.h 2004-06-22 14:21:17.963422126 +0200
-@@ -64,7 +64,7 @@
- extern gid_t var_owner_gid;
-
- #define VAR_SGID_GROUP "setgid_group"
--#define DEF_SGID_GROUP "postdrop"
-+#define DEF_SGID_GROUP "maildrop"
- extern char *var_sgid_group;
- extern gid_t var_sgid_gid;
-
-#@@ -231,7 +231,7 @@
-# */
-# #define VAR_CONFIG_DIR "config_directory"
-# #ifndef DEF_CONFIG_DIR
-#-#define DEF_CONFIG_DIR "/etc/postfix"
-#+#define DEF_CONFIG_DIR "/etc/mail"
-# #endif
-# extern char *var_config_dir;
-#
---- postfix-2.9.0/conf/main.cf.orig 2012-02-04 19:05:20.960656539 +0100
-+++ postfix-2.9.0/conf/main.cf 2012-02-04 19:12:31.810624906 +0100
-@@ -39,7 +39,7 @@
+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