Hi!
Since it began, the Hobbit and Xymon mailing lists have been handled using a combination of "qmail" and "ezmlm-idx" software. However, both of these are getting rather old - and especially qmail has been giving me some headaches when it comes to handling spam.
It also is not included as a standard package in Debian (or any other Linux distribution, as far as I know), so packaging it up and getting it integrated with other Debian software has been a bit of a challenge.
So I have decided to move all of the mail handling ove to Postfix and Mailman - both of which are modern, well-maintained and flexible solutions for e-mail and mailing lists.
The setup is working now on a new server I've been building, so I expect the actual move to happen sometime next week. As users of the xymon at xymon.com mailing list you should not see any real changes - all of the current subscribers will be moved over to the new setup. So I expect the list to keep operating as usual. The only thing you'll notice is that you will receive a mail with a password for the mailing-list web interface - you'll need this if you want to unsubscribe, or if you want to switch to/from a digest mailing.
I just want this done before shipping 4.3.0, so I can put some up-to-date instructions on how to subscribe to the list into the docs.
Regards, Henrik