Hey folks, I’m getting a startup panic on my KumoMTA instance (2025.10.x build).
Logs show:
thread 'main' panicked at crates/kumo-server-lifecycle/src/lib.rs:109:32 - called Option::unwrap() on a None value
Validation fails with:
TOML parse error at line 3, column 11: invalid table header expected '.', ']'
and sometimes Error: Initialization raised an error: Validation failed.
I already fixed [listener "default"] → [listener.default], and rechecked ownership/permissions under /var/spool/kumomta, but it still crashes after starting.
Can anyone share what usually causes this unwrap panic or how to trace which config section triggers it?
I’m validating with --policy /opt/kumomta/etc/policy/init.lua --validate and using standard queues.toml + listener_domains.toml.