I've many crons that create and update tasks in redmine. Some of them are for using the SCM and some others for the helpdesk. You can find information about both behaviors/configurations here: - [SCM](http://www.redmine.org/projects/redmine/wiki/RedmineRepositories) - [Helpdesk](http://www.redmine.org/projects/redmine/wiki/RedmineReceivingEmails) In both cases the issues are updated with a cron, and in this case HipChat does not get notified (that's a lot of issues not being notified).