+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 2022-04-04 19:57:20.803350655 +0200
++++ postfix-3.7.0/src/global/mail_params.h 2022-04-04 19:57:21.000351111 +0200
+@@ -4322,6 +4322,13 @@ extern char *var_dnssec_probe;
+ "lmtp=24, smtp=25, smtps=submissions=465, submission=587"
+ extern char *var_known_tcp_ports;
+
++ /*
++ * SMTPD messages
++ */
++#define VAR_REJECT_REPLY_MSG_ACCESS_DENIED "smtpd_reject_msg_access_denied"
++#define DEF_REJECT_REPLY_MSG_ACCESS_DENIED "rejected: Relay access denied."
++extern char *var_reject_reply_msg_access_denied;
++
+ /* LICENSE
+ /* .ad
+ /* .fi
+diff -urNp -x '*.orig' postfix-3.7.0.org/src/smtpd/smtpd.c postfix-3.7.0/src/smtpd/smtpd.c
+--- postfix-3.7.0.org/src/smtpd/smtpd.c 2021-10-02 16:46:46.000000000 +0200
++++ postfix-3.7.0/src/smtpd/smtpd.c 2022-04-04 19:57:21.001351113 +0200
+@@ -6577,6 +6577,7 @@ int main(int argc, char **argv)
+ VAR_MILT_MACRO_DEFLTS, DEF_MILT_MACRO_DEFLTS, &var_milt_macro_deflts, 0, 0,
+ VAR_SMTPD_MILTER_MAPS, DEF_SMTPD_MILTER_MAPS, &var_smtpd_milter_maps, 0, 0,
+ VAR_STRESS, DEF_STRESS, &var_stress, 0, 0,
++ VAR_REJECT_REPLY_MSG_ACCESS_DENIED, DEF_REJECT_REPLY_MSG_ACCESS_DENIED, &var_reject_reply_msg_access_denied, 1, 0,
+ VAR_UNV_FROM_WHY, DEF_UNV_FROM_WHY, &var_unv_from_why, 0, 0,
+ VAR_UNV_RCPT_WHY, DEF_UNV_RCPT_WHY, &var_unv_rcpt_why, 0, 0,
+ VAR_REJECT_TMPF_ACT, DEF_REJECT_TMPF_ACT, &var_reject_tmpf_act, 1, 0,