Hello! After uninstalling MariaDB-Client-10.1, installing MariaDB-Client (10.0.27-2) from Debian repo and upgrading postfix (3.1.3-1) root@vm104-mail:~# dpkg -l | grep maria ii libmariadbclient18:amd64 10.0.27-2 amd64 MariaDB database client library ii mariadb-client 10.0.27-2 all MariaDB database client (metapackage depending on the latest version) ii mariadb-client-10.0 10.0.27-2 amd64 MariaDB database client binaries rc mariadb-client-10.1 10.1.18+maria-1~jessie amd64 MariaDB database client binaries ii mariadb-client-core-10.0 10.0.27-2 amd64 MariaDB database core client binaries ii mariadb-common 10.0.27-2 all MariaDB common metapackage
root@vm104-mail:~# dpkg -l | grep postfix ii postfix 3.1.3-1 amd64 High-performance mail transport agent ii postfix-ldap 3.1.3-1 amd64 LDAP map support for Postfix ii postfix-mysql 3.1.3-1 amd64 MySQL map support for Postfix ii postfix-pcre 3.1.3-1 amd64 PCRE map support for Postfix I get this error in /var/log/mail.err: Oct 30 19:30:49 vm104-mail dovecot: managesieve-login: Error: Timeout waiting for handshake from auth server. my pid=31553, input bytes=0 Oct 30 19:30:49 vm104-mail dovecot: managesieve-login: Error: Timeout waiting for handshake from auth server. my pid=31549, input bytes=0 Oct 30 19:30:51 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:30:51 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 60 secs Oct 30 19:31:10 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:31:10 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 2 secs Oct 30 19:31:15 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:31:15 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 4 secs Oct 30 19:31:20 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:31:20 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 8 secs Oct 30 19:31:28 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:31:28 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 16 secs Oct 30 19:31:44 vm104-mail dovecot: auth: Fatal: Unknown database driver 'mysql' Oct 30 19:31:44 vm104-mail dovecot: master: Error: service(auth): command startup failed, throttling for 32 secs What's causing this issue now? Should I open another ticket?