The DragonFly project has several mailing lists for discussion.
For more immediate communication, DragonFly users and developers are often available via IRC on #dragonflybsd, on EFNet.
DragonFly uses Mailman to manage all mailing lists. To subscribe, unsubscribe, or change your settings for a subscribed email address, visit lists.dragonflybsd.org/mailman/listinfo.
The bugs@ and submit@ lists are tied into the bug tracker at bugs.dragonflybsd.org. Subscribers to these lists will receive all output, but to post to those lists, you need to create an account at bugs.dragonflybsd.org.
A mailing list subscription is not necessary to post a bug report when you access the bugs database via bugs.dragonflybsd.org. You will be appropriately CCd via your bugs database registration.