Allow custom email headers

[Maik Derstappen]

Currently one can’t add custom email headers, which would help to connect monit with email based notication sytems.

[Lutz Mader]

Hello Maik,
have you read the manual mail message format information, see https://mmonit.com/monit/documentation/monit.html#Message-format

This is a simple way to customize the alert mail.

I use somethink like this.

set mail-format { from: [e-mail]
  subject: Monit $SERVICE $EVENT
  message: Monit $ACTION
Service $SERVICE event $EVENT
at $DATE on $HOST
$DESCRIPTION
Yours sincerely, Monit }

With regards,
Lutz

[Tildeslash]

the main email properties can be set via the format option, we don't plan to add support for "X-*" headers