Graylog 2.4.6 Email Alert Callback

Good Afternoon,
Is there some new set-up to make Email Alerts work in this version of Graylog 2.4.6?
I am coming from 2.0.3 and I set up the Transport section of my server.conf file as I had in the past.
Feel like there is something missing for the Email Alert Callback plugin?
I can successfully ping the SMTP server on port 25 directly from the server.
Also was able to add the execommand-alarmcallback-1.0.0.jar and set up an alert using that type and the email went through

Error message:

The Graylog server encountered an error while trying to send an email. This is the detailed error message: org.apache.commons.mail.EmailException: Sending the email to the following server failed : (javax.mail.MessagingException: Could not connect to SMTP host:, port: 25; nested exception is: Connection reset)

We have resolved our issue on this item.

if you share your solution, the community would benefit from that.

Maybe even a link to the posting/blog that guides you is enough.

Thank you

Sure on our server.conf file we had not specifically set the following items to false
We had them commented out with true, so assumed false which was not the case.
So uncommented them and changed them to false

#transport_email_use_auth = true
#transport_email_use_tls = true
#transport_email_use_ssl = true

transport_email_use_auth = false
transport_email_use_tls = false
transport_email_use_ssl = false

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