Why the message and source is null?

[JoeyXu]

Why the message and source is null?Thanks

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Message: ${message.message} 
Source: ${message.source}
Full Message: ${message.fields.full_message} 

[jan (Jan Doberstein)]

how does the message looks in graylog? are the fields source and full_message with the content you expect present?

Did you read the part of the documentation regarding alerts?

http://docs.graylog.org/en/2.4/pages/streams/alerts.html#email-alert-notification

[jochen]

Please post the complete message template you’re using.