- Shipped
- October 14, 2026 at 10:23 PM UTC
- Author
- Kamo
- Commit
- 166d810
kamouniverse.com is the platform's sending domain, but the server still introduced itself as mail.kamocrm.com in its EHLO, Received headers and bounces. Postfix now picks its name at start: mail.kamouniverse.com when that name resolves to the same address as mail.kamocrm.com, otherwise mail.kamocrm.com as before, since a HELO name with no A record is itself a spam signal. smtp_helo_name follows myhostname. auto-cert now issues mail.kamouniverse.com and mirrors it into the mail namespace, restarting postfix. It can only issue once the A record resolves, so adding the record is all it takes for the switch: the restart picks the new name and its certificate.