1.1 KiB
1.1 KiB
Fixes you need after upgrading Debian from 8 to 9
[TOC]
Postfix
Run commands:
# Backup files
cp /etc/postfix/main.cf /etc/postfix/main.cf.bak
cp /etc/postfix/master.cf /etc/postfix/master.cf.bak
# Update main.cf and master.cf
postconf -e daemon_directory='/usr/lib/postfix/sbin'
postconf -e shlib_directory='/usr/lib/postfix'
postconf -e compatibility_level=2
for i in $(postconf -Mf | grep '^[0-9a-zA-Z]' | awk '{print $1"/"$2"/chroot=n"}'); do postconf -F $i; done
- Incorrect
daemon_directory
causes Postfix cannot start. - Incorrect
shlib_directory
causes Postfix cannot find pcre/mysql/pgsql/ldap modules. - Debian 8 ships Postfix 2.x, but Debian 9 ships Postfix 3.x, we need to disable compatible mode.
Dovecot
Please remove !SSLv2
from parameter ssl_protocols
, and restart Dovecot service:
ssl_protocols = !SSLv3
Fail2ban
There's a duplicate parameter in file /etc/fail2ban/jail.conf
, under section
[pam-generic]
like below:
[pam-generic]
...
port = all
...
port = anyport
Comment out port = anyport
and restart fail2ban service.