The Ishtm dispatcher manage the delivery of a mail notifying a "will" uploaded by another user who is no more interacting with the the system.
The following example links to a mongodb container from the official MongoDb image.
$ docker run -d --name ishtm-dispatcher --link mongodb:mongodb nexo/3n4ishtmdispatcher run -d 127.0.0.1:27017 -u dbuser -w dbpwd --smtpaddress 192.168.0.1 --smtpport 443 --smtpuser username --smtppwd pwd