If you have a problem or a question, be sure to check the FAQ first.
The users mailinglist can be found here: http://sourceforge.net/mail/?group_id=114382. The mailinglist is low volume (less than one message per day on average). Subscribing and unsubscribing can be done on the following page: http://lists.sourceforge.net/lists/listinfo/vuurmuur-users. It's used for support and announcements. The list allows posts from subscribed users only to prevent spam getting on it.
Forums can be found at SourceForge http://sourceforge.net/forum/?group_id=114382.
An IRC-channel for Vuurmuur is hosted by freenode.net. To join, connect to irc.freenode.net and join channel #vuurmuur. Feel free to idle there.