recommend free anti-spam vmware appliance

hello peoples,

just wanted to get your input on any good free vmware virtual appliances to protect ms exchange infrastructure (mail server)

mainly looking at something that has "ip reputation based filtering/limiting" feature
a secondary need would then be ability to select which block lists to include

J PAsked:
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I was looking at this about a year ago, and tried quite a few of them.  

Proxmox worked well for me, and was pretty simple to setup.

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vmwarun - ArunCommented:
VMware Virtual Appliances URL is one option to look for multiple choices for your specific requirement.

J PAuthor Commented:
proxmox doesnt appear to have connection throttling/ip reputation based blocking
the list given dont appear to be free based

am seeking appliances that have  "ip reputation based filtering/limiting" in particular as this doesnt appear to be a common feature
J PAuthor Commented:
thanks all
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