In monit you need setup the MAIL-FORMAT
directive:
As per the documentation:
SET MAIL-FORMAT {mail-format}
Example:
set mail-format {
from: monit@foo.bar
reply-to: support@domain.com
subject: $SERVICE $EVENT at $DATE
message: Monit $ACTION $SERVICE at $DATE on $HOST: $DESCRIPTION.
Yours sincerely,
monit
}
The from
field has to match the email that you are allowing in SES.