docker-mailserver/target/dovecot/10-ssl.conf
Marek Walczak 49b3867c1b debian stretch slim (#784)
* Switch to stretch-slim as base image.
 - first step correct the testdata, as newer packages are more strict
about the mail-structure.

* Switch to stretch-slim: correcting the test-environment and the build
 - add missing build-step to make
 - clean the userdb aswell
 - use timeout of netcat, as postgrey would not close the connection
 - there is 2 extra mail-logs -> assert_output 5
 - cosmetic: use "" instead of ''

* Switch to stretch-slim:
new image:
 - smaller size
 - 0 CVEs compared to 11 CVEs in ubuntu 16.04 Image
better backport situation
 - postfix 3.1.6 vs 3.1.0
 - fail2ban 0.9.6 vs 0.9.3
 ...
changes needed because of stretch-slim:
- add missing gnupg and iproute2 package
- remove non-free rar, unrar-free should do
- rsyslog does not add syslog user and has different conf-structure
- pyzor command discover was deprecated and is missing in the new
stretch package

- dovecot does not know SSLv2 anymore. removed because of warnings in
log

- iptables does not know imap3, IMAP working group chose imap2 in favor
of imap3

* Switch to debian stretch slim:
SSLv2 seems to be a not known protocol anymore - good!

* switch to debian stretch slim:
make this test more stable. there might be more than only one mail.log
(mail.info, mail.warn, ...)

* switch to debian stretc slim:
 new openssl 1.1.0 needs stronger ciphers, removed some weekers ones.
Please, look through the new list of cipher! this needs to be done in
another commit for all other SSL/TLS-Endpoints aswell.

* Switch to debian stretch slim:
let our server pre-empt the cipher list.
Did a read through, wwwDOTpostfixDOTorg/FORWARD_SECRECY_READMEDOThtml
and
wwwDOTpostfixDOTorg/TLS_READMEDOThtml

* Switch to debian stretch slim: lets give this openssl-based test a new and independent but identical container.  many other test on the main 'mail' container might interfere here.

* Switch to debian stretch slim: remove unused lines
2017-12-31 12:33:48 +01:00

59 lines
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##
## SSL settings
##
# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
#ssl = yes
# PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
# dropping root privileges, so keep the key file unreadable by anyone but
# root. Included doc/mkcert.sh can be used to easily generate self-signed
# certificate, just make sure to update the domains in dovecot-openssl.cnf
ssl_cert = </etc/dovecot/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
# If key file is password protected, give the password here. Alternatively
# give it when starting dovecot with -p parameter. Since this file is often
# world-readable, you may want to place this setting instead to a different
# root owned 0600 file by using ssl_key_password = <path.
#ssl_key_password =
# PEM encoded trusted certificate authority. Set this only if you intend to use
# ssl_verify_client_cert=yes. The file should contain the CA certificate(s)
# followed by the matching CRL(s). (e.g. ssl_ca = </etc/ssl/certs/ca.pem)
#ssl_ca =
# Require that CRL check succeeds for client certificates.
#ssl_require_crl = yes
# Directory and/or file for trusted SSL CA certificates. These are used only
# when Dovecot needs to act as an SSL client (e.g. imapc backend). The
# directory is usually /etc/ssl/certs in Debian-based systems and the file is
# /etc/pki/tls/cert.pem in RedHat-based systems.
#ssl_client_ca_dir =
#ssl_client_ca_file =
# Request client to send a certificate. If you also want to require it, set
# auth_ssl_require_client_cert=yes in auth section.
#ssl_verify_client_cert = no
# Which field from certificate to use for username. commonName and
# x500UniqueIdentifier are the usual choices. You'll also need to set
# auth_ssl_username_from_cert=yes.
#ssl_cert_username_field = commonName
# DH parameters length to use.
ssl_dh_parameters_length = 2048
# SSL protocols to use
ssl_protocols = !SSLv3
# SSL ciphers to use
ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:!DSS
# Prefer the server's order of ciphers over client's.
ssl_prefer_server_ciphers = yes
# SSL crypto device to use, for valid values run "openssl engine"
#ssl_crypto_device =