Postfix Upgrade Checklist
Upgrade Postfix with configuration compatibility and rollback controls.
Production note: Back up configuration, run
postfix check, and stage changes before reloading.Before upgrade
- Record current package and Postfix versions.
- Back up configuration and maps.
- Save
postconf -nandpostconf -M. - Review release notes.
Upgrade
postconf mail_version
postconf -n > /root/postconf-n.before
postconf -M > /root/postconf-M.before
dnf update postfix
postfix checkAfter upgrade
Compare effective configuration, verify all services, inspect logs, and test inbound, outbound, TLS, SASL, DKIM, and local delivery paths.
Rollback
Document package rollback availability and configuration restore steps before starting.