Fixes you need after upgrading Debian from 9 to 10

Fixes you need after upgrading Debian from 9 to 10

Warning

This is still a DRAFT document, it may miss some other important changes.

Postfix

If you're running MySQL/MariaDB or PostgreSQL backend, you need to remove parameter port = in /etc/postfix/mysql/*.cf and /etc/postfix/pgsql/*.cf.

Dovecot

Changes required to be made in Dovecot main config file /etc/dovecot/dovecot.conf:

Remove all postmaster_address =.
Remove parameter ssl_protocols =.
Add new parameter ssl_min_protocols like this:

ssl_min_protocols = TLSv1.2

Add new parameter ssl_dh and load existing file:
- on CentOS, it's /etc/pki/tls/dhparams.pem
- on Debian/Ubuntu, FreeBSD, OpenBSD, it's /etc/ssl/dhparams.pem

ssl_dh = </etc/ssl/dhparams.pem

If you have plugin stats enabled, you need to rename it:

Old	New
`mail_plugins = ... stats`	`mail_plugins = ... old_stats`
`protocol imap { mail_plugins = ... imap_stats }`	`protocol imap { mail_plugins = ... imap_old_stats}`
`service stats {}`	`service old-stats {}` Warning: It's a dash (`-`), not underscore (`_`).
`fifo_listener stats-mail`	`fifo_listener old-stats-mail` Warning: It's a dash (`-`), not underscore (`_`).
`fifo_listener stats-user`	`fifo_listener old-stats-user` Warning: It's a dash (`-`), not underscore (`_`).
`unix_listener stats`	`unix_listener old-stats` Warning: It's a dash (`-`), not underscore (`_`).
`plugin { stats_refresh = ... }`	`plugin { old_stats_refresh = ...}`
`plugin { stats_track_cmds = ...}`	`plugin { old_stats_track_cmds = ...}`

Restart Dovecot service is required.

SOGo Groupware

SOGo packages were removed during upgrading Debian, but SOGo team doesn't offer nightly build binary packages for Debian 10. We have to remove the old apt repo (/etc/apt/sources.list.d/sogo-nightly.list) and use the sogo packages offered in Debian 10 official apt repo.

rm -f /etc/apt/sources.list.d/sogo-nightly.repo
apt update
apt install sogo
service sogo restart