[IMail Forum] control access list

[Matrosity Hosting]

Now that this is working as it should be I'm noticing that there are IP blocks that start with 24, 61, 200, 211, and 222. Would it be worthwhile to simply block everything from such a range? I don't know where they originate from but it seems that if we shared such a list we could effectively block many dictionary attacks. Thoughts?