From a888dfa023ec5942507d12314eeaa8be8448f772 Mon Sep 17 00:00:00 2001
From: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
Date: Sat, 2 Aug 2025 13:54:34 +0200
Subject: [PATCH] fix: remove deprecated configuration from Postfix

Error as posted by Postfix:

```txt
postconf: warning: /etc/postfix/main.cf: support for parameter "smtpd_tls_dh1024_param_file" will be removed; instead, do not specify (leave at default)
```

Signed-off-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
---
 Dockerfile                                | 1 -
 target/postfix/main.cf                    | 1 -
 target/scripts/startup/setup.d/postfix.sh | 3 ---
 3 files changed, 5 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 4064e4d7..fc91b11b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -190,7 +190,6 @@ COPY target/postfix/main.cf target/postfix/master.cf /etc/postfix/
 # DH parameters for DHE cipher suites, ffdhe4096 is the official standard 4096-bit DH params now part of TLS 1.3
 # This file is for TLS <1.3 handshakes that rely on DHE cipher suites
 # Handled at build to avoid failures by doveadm validating ssl_dh filepath in 10-ssl.auth (eg generate-accounts)
-COPY target/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
 COPY target/shared/ffdhe4096.pem /etc/dovecot/dh.pem
 
 COPY \
diff --git a/target/postfix/main.cf b/target/postfix/main.cf
index 518e2dc5..569dc1a9 100644
--- a/target/postfix/main.cf
+++ b/target/postfix/main.cf
@@ -45,7 +45,6 @@ smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
 smtpd_tls_mandatory_ciphers = high
 smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
 smtpd_tls_exclude_ciphers = aNULL, SEED, CAMELLIA, RSA+AES, SHA1
-smtpd_tls_dh1024_param_file = /etc/postfix/dhparams.pem
 smtpd_tls_CApath = /etc/ssl/certs
 smtp_tls_CApath = /etc/ssl/certs
 
diff --git a/target/scripts/startup/setup.d/postfix.sh b/target/scripts/startup/setup.d/postfix.sh
index ac9c23e7..eaa29273 100644
--- a/target/scripts/startup/setup.d/postfix.sh
+++ b/target/scripts/startup/setup.d/postfix.sh
@@ -49,9 +49,6 @@ EOF
   __postfix__log 'trace' 'Setting up Postfix vhost'
   _create_postfix_vhost
 
-  __postfix__log 'trace' 'Setting up DH Parameters'
-  _setup_dhparam 'Postfix' '/etc/postfix/dhparams.pem'
-
   __postfix__log 'trace' "Configuring message size limit to '${POSTFIX_MESSAGE_SIZE_LIMIT}'"
   postconf "message_size_limit = ${POSTFIX_MESSAGE_SIZE_LIMIT}"