I have built a simple Vultr mail server by following (https://sive.rs/ti) guidance. The server has functioned without a single flaw for a year and survived the update from OpenBSD 7.3. to OpenBSD 7.4. However, after updating to OpenBSD 7.5. all mail server functionality ended at the same time. Calendars, websites etc. function without a flaw.
I have tried to understand where the reason for sudden mail functionality ending after system update could reside. Could there be some small breaking syntax change in httpd or somewhere else? The mail worked the day before the update. All help is welcome.
Some checks:
When trying to send mail, Mutt gives error message: Error sending message, child exited 75 (Deferred.).
When using command “dovecot”: “Error in configuration file…ssl_key: Can’t open file /etc/ssl/private/mydomain.com:443.key: Permission denied”.
When trying to receive mail, nothing happens.
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