Email reputation for inout to IDSs?

All,

I have been working in email reputation system that has computed
sender reputations for over an year. I believe that there are couple
of efforts to incorporate email reputations into IDSs. Is someone in
the group working on this? Are there any IDSs which can be configured
to perform extensive analysis for non-reputable senders? I would be
interested in sharing this data with other researchers in the group.

---
Gautam

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