Activity
- Apply mailserver role to push D3553 to Postfix
- Start DKIM process
- Restart Postfix
- Validate DKIM is correctly used
What to look for?
- Mail logs: /var/log/maillog
- Grafana dashboard: https://grafana.nasqueron.org/d/h36Havfik/postfix-legacy-dashboard
Validation
- Can we validate external mails?
- Send mail from gmail to Nasqueron
- Can we sign our mails?
- Send mail from Nasqueron to gmail
- Should contain the DKIM signature
- DKIM signature should pass
- Send mail from Nasqueron to gmail
If any of those two fails, rollback.
Rollback procedure
To rollback, it's enough to instruct Postfix not to use milter anymore.