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Code Issues Releases Activity

fix: Dovecot: ssl config

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Signed-off-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
This commit is contained in:
Georg Lauterbach
2025-08-02 16:37:37 +02:00
parent a96d459c49
commit 536fd584eb
3 changed files with 8 additions and 8 deletions
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2
Dockerfile
View File

@ -189,7 +189,7 @@ 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)
# Handled at build to avoid failures by doveadm validating ssl_server_dh_file filepath in 10-ssl.auth (eg generate-accounts)
COPY target/shared/ffdhe4096.pem /etc/dovecot/dh.pem
COPY \

10
target/dovecot/10-ssl.conf
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@ -9,8 +9,8 @@
# dropping root privileges, so keep the key file unreadable by anyone but root.
# These [snakeoil files actually exist](https://askubuntu.com/questions/396120/what-is-the-purpose-of-the-ssl-cert-snakeoil-key), but shouldn't ever be used in production!
# As `SSL_TYPE` env is required by docker-mailserver, these "snakeoil" files will be replaced on container startup.
ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_key = </etc/ssl/private/ssl-cert-snakeoil.key
ssl_server_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_server_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
# Fallback/Hybrid cert support. docker-mailserver will enable these when using ENV vars `SSL_ALT_CERT_PATH` and `SSL_ALT_KEY_PATH`.
#ssl_alt_cert = </path/to/alternative/cert.pem
#ssl_alt_key = </path/to/alternative/key.pem
@ -48,7 +48,7 @@ ssl_key = </etc/ssl/private/ssl-cert-snakeoil.key
# SSL DH parameters
# Since v2.3.3+ Diffie-Hellman parameters have been made optional, and you are encouraged to disable non-ECC DH algorithms completely.
# `docker-mailserver` is configured to use the recommended pre-defined 4096-bit DHE Group at https://github.com/internetstandards/dhe_groups
ssl_dh = </etc/dovecot/dh.pem
ssl_server_dh_file = /etc/dovecot/dh.pem
# Minimum SSL protocol version to use. Potentially recognized values are SSLv3,
# TLSv1, TLSv1.1, and TLSv1.2, depending on the OpenSSL version used.
@ -57,8 +57,8 @@ ssl_min_protocol = TLSv1.2
# SSL ciphers to use
ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
# Prefer the server's order of ciphers over client's.
ssl_prefer_server_ciphers = yes
# ref: https://doc.dovecot.org/main/core/summaries/settings.html#ssl_server_prefer_ciphers
ssl_server_prefer_ciphers = server
# SSL crypto device to use, for valid values run "openssl engine"
#ssl_crypto_device =

4
target/scripts/helpers/ssl.sh
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@ -51,8 +51,8 @@ function _setup_ssl() {
# Dovecot configuration
sedfile -i -r \
-e "s|^(ssl_key =).*|\1 <${DOVECOT_KEY}|" \
-e "s|^(ssl_cert =).*|\1 <${DOVECOT_CERT}|" \
-e "s|^(ssl_server_key_file =).*|\1 <${DOVECOT_KEY}|" \
-e "s|^(ssl_server_cert_file =).*|\1 <${DOVECOT_CERT}|" \
"${DOVECOT_CONFIG_SSL}"
}