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[spf-discuss] Re: Which SPF implementation to choose?

2006-08-22 09:03:45
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Ulrike vom Stein wrote:
I am using IIS. There are several windows based solutions which use SPF.
What I am interested is to know which solution is based on which SPF
library. Wouldnt that be a good information on the openspf website?

As far as I know, none of the Windows/IIS/Exchange solutions are based on 
libspf or libspf2, they all use proprietary SPF implementations (which 
needn't be a bad thing).

The "SPF Event Sink"[1] by Johan Strand is probably the most open one, but 
it is no longer under active development and is listed as "Alpha" quality 
software on SourceForge.

The other Windows/IIS/Exchange solutions, "Policy Patrol Spam Filter",
"MailEssentials", "Sunbelt Messaging Ninja", are all commercial products.  
Depending on your other mail filtering needs, it may be worth buying one 
of them.

References:
 1. http://sourceforge.net/projects/spf-event-sink/

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