SPFtoolbox is a JavaScript and PHP app to look up DNS records such as SPF, MX, Whois, and more.
This is free and open source software.
Website: github.com/charlesabarnes/SPFtoolbox
Support:
Developer: Charles Barnes
License: MIT License
SPFtoolbox is written in PHP. Learn PHP with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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