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Update dovecot, spampd settings for Ubuntu 22.04

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* dovecot's ssl_protocols became ssl_min_protocol in 2.3
* spampd fixed a bug so we can remove lmtp_destination_recipient_limit=1 in postfix
This commit is contained in:
Joshua Tauberer
2022-01-09 10:32:36 -05:00
parent 96bab10b53
commit 3599bbbf2e
3 changed files with 28 additions and 15 deletions
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2
setup/mail-dovecot.sh
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@@ -84,7 +84,7 @@ tools/editconf.py /etc/dovecot/conf.d/10-ssl.conf \
ssl=required \
"ssl_cert=<$STORAGE_ROOT/ssl/ssl_certificate.pem" \
"ssl_key=<$STORAGE_ROOT/ssl/ssl_private_key.pem" \
"ssl_protocols=TLSv1.2" \
"ssl_min_protocol=TLSv1.2" \
"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" \
"ssl_prefer_server_ciphers=no" \
"ssl_dh_parameters_length=2048"

15
setup/mail-postfix.sh
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@@ -13,8 +13,8 @@
# destinations according to aliases, and passses email on to
# another service for local mail delivery.
#
# The first hop in local mail delivery is to Spamassassin via
# LMTP. Spamassassin then passes mail over to Dovecot for
# The first hop in local mail delivery is to spampd via
# LMTP. spampd then passes mail over to Dovecot for
# storage in the user's mailbox.
#
# Postfix also listens on ports 465/587 (SMTPS, SMTP+STARTLS) for
@@ -193,16 +193,17 @@ tools/editconf.py /etc/postfix/main.cf \
# ### Incoming Mail
# Pass any incoming mail over to a local delivery agent. Spamassassin
# will act as the LDA agent at first. It is listening on port 10025
# with LMTP. Spamassassin will pass the mail over to Dovecot after.
# Pass mail to spampd, which acts as the local delivery agent (LDA),
# which then passes the mail over to the Dovecot LMTP server after.
# spampd runs on port 10025 by default.
#
# In a basic setup we would pass mail directly to Dovecot by setting
# virtual_transport to `lmtp:unix:private/dovecot-lmtp`.
tools/editconf.py /etc/postfix/main.cf "virtual_transport=lmtp:[127.0.0.1]:10025"
# Because of a spampd bug, limit the number of recipients in each connection.
# Clear the lmtp_destination_recipient_limit setting which in previous
# versions of Mail-in-a-Box was set to 1 because of a spampd bug.
# See https://github.com/mail-in-a-box/mailinabox/issues/1523.
tools/editconf.py /etc/postfix/main.cf lmtp_destination_recipient_limit=1
tools/editconf.py /etc/postfix/main.cf -e lmtp_destination_recipient_limit=
# Who can send mail to us? Some basic filters.