Email Not Sending

Send a controlled test from Site Administration > Email and note the exact error. Then inspect:

docker compose logs --since=15m kaya

Timeout/refused indicates DNS, route, firewall, port or relay-listener problems. Authentication failure indicates username/password or provider policy. Certificate errors indicate hostname/trust-chain issues. Sender rejected indicates From-domain or relay permission. Successful SMTP submission with no inbox delivery requires relay queues, spam and DMARC/SPF review.

Confirm only one of STARTTLS or implicit SSL matches the port and that Base URL is correct. A template formatting error can also block a particular message; restore the default supported placeholders shown in the editor.

Do not paste SMTP passwords into logs or support requests. Rotate the credential if it may have been exposed.