Warning
THIS IS A DRAFT DOCUMENT, DO NOT APPLY IT.
Before upgrading server OS, it's better upgrade iRedMail to the latest stable release first. You can find all upgrade tutorials here.
After you have latest iRedMail release running, it's ok to upgrade server OS
with command do-release-upgrade
now.
Dovecot 2.3 breaks some configurations used in Dovecot 2.2, please follow our tutorial to upgrade its config files:
After upgraded server OS, please re-upgrade iRedAPD, iRedAdmin(-Pro) and mlmmjadmin even you're already running the latest versions before upgrading OS, their upgrade scripts will help fix some issues caused by OS upgrade.
/etc/php/7.4/fpm/pool.d/www.conf
[inet]
user = www-data
group = www-data
listen = 127.0.0.1:9999
listen.owner = www-data
listen.group = www-data
listen.mode = 0660
; IP addresses must be separated by comma, and no space between comma and ip.
listen.allowed_clients = 127.0.0.1
pm = dynamic
pm.max_children = 200
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 10
pm.max_requests = 500
pm.status_path = /php-fpm-status
ping.path = /php-fpm-ping
request_terminate_timeout = 60s
access.log = /var/log/php-fpm/access.log
slowlog = /var/log/php-fpm/slow.log
request_slowlog_timeout = 10s