Note the relay=... field. That tells you which transport failed.
If SELinux is the culprit:
Run:
Postfix uses a transport map to decide how to deliver mail (e.g., via SMTP, local, or a script). If this map points to a non-existent or misnamed transport, you’ll see this error. This often happens after an upgrade (the "upd" in your subject line).
Note the relay=... field. That tells you which transport failed.
If SELinux is the culprit:
Run:
Postfix uses a transport map to decide how to deliver mail (e.g., via SMTP, local, or a script). If this map points to a non-existent or misnamed transport, you’ll see this error. This often happens after an upgrade (the "upd" in your subject line).
