Hey Mike!
The whitelist and blacklist entries are stored in the ip-access.sbin file located at C:\Program Files (x86)\SmarterTools\SmarterMail\Service\Settings by default.
As for your 2nd question about converting the .xml to .json, SmarterTools may have a way to do that, but I'm personally not sure.
Hope this helps :)
Linda Pagillo
Mail's Best Friend
Email: linda.pagillo@mailsbestfriend.com
Web: www.mailsbestfriend.com
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