Thanks for your kind support,
I just checked on SMTP server, looks like it supports STARTLS connection through port 25
This is result when I turn on secure
Action failed to run
The following error was found:
error sending email
Details:
140111650948992:error:1408F10B:SSL routines:ssl3_get_record:wrong version number:../deps/openssl/openssl/ssl/record/ssl3_record.c:332:
My kibana.yml configuration
server.ssl.enabled: false
xpack.security.encryptionKey: "key"
xpack.reporting.encryptionKey: "key"
xpack.encryptedSavedObjects.encryptionKey: ""key
elasticsearch.ssl.certificateAuthorities: "/etc/kibana/elasticsearch-ca.pem"
xpack.security.session.idleTimeout: "1h"
xpack.security.session.lifespan: "30d"
xpack.actions.rejectUnauthorized: false