Why is Norton 360 blocking spamfighter.com?

Why is Norton 360 blocking the Spamfighter website       spamfighter. com  ?   There are 2 negative comments, one 3 years ago and another 5 years ago.  Neither comment appears to be valid today.

I subscribe to Spamfighter PRO Windows Live email for spam/junk email screening, and have never had any problems with the program causing fake errors.

Also, I believe Norton 360 is somehow preventing Spamfighter from running at times.  Have been unable to determine it is actually the cause however. 

Any help on either of these problems would be appreciated.

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