Performed this all in sandbox, and didnt notice any errors, so I moved to prod, but oops. Running MariaDB 10.4.32 Backed up Snapshot os Upgrade to MariaDB 10.6.16 mariadb_upgrade - no errors Plain and simple, upgrade seemed to work, Wordpress sites worked find, and email seemed to be fine. BUT I woke to hundreds of postfix/trivial-rewrite[12707]: warning: proxy:mysql:/etc/postfix/mysql-virtual_alias_domains.cf: table lookup problem Seems like any emails to the primary domain work, but any alternative domains fail with this. Reverted to previous snapshot and things are good again, but I'll eventually need to upgrade db server.
You post on Linux Forum, but is that host running ISPConfig? Namely, ISPConfig does not support upgrading database version, that usually leads to a not working system. ISPConfig supports only the database version that comes default with the host Operating System.
