How does your server handle rmgroup control messages?

Dear all,
The Big-8 Management Board has posted an RFD to remove 99 disused moderated groups [1].  One of the points raised in the discussion is whether removing these groups might irretrievably destroy their contents, which could hinder people doing (historical) research.  The Board is therefore seeking information from server administrators concerning their article retention and archiving policies for deleted groups.  We're particularly interested in hearing from admins of public servers (that is, those that allow read access from the general public, whether for free or for a fee) but would also be happy to hear about servers operated for personal use or for use within an organization. What we'd like to know is as follows:
1. Is your server set up to process control messages to remove groups, or does it automatically ignore them?  If it does process them, is this process automatic or does it require manual intervention?
2. If your server does process control messages, what action does your server normally take for an rmgroup?  For example, does it remove the group entirely so that users can no longer see and access it, or does it simply mark the group as read-only so that users can still subscribe and read but not post to it?
3. How long does your server retain articles in deleted groups, and is this retention limit any different from that of active groups?
4. Do you make archives of posts in deleted groups that are accessible other than via NNTP (e.g., via a website)?  If so, do these archives faithfully preserve the article headers and bodies?  Do you make these archives available to your users, enquirers, and/or the general public?
Regards,
Tristan
[1] <news:vqq7tf$ehn$1@reader1.panix.com>
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