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A comment on Show HN: OpenBSD Email Service – A free-email alternative. Parent comment

Re:Show HN: OpenBSD Email Service – A free-email alternative by kbenson on Friday February 16, 2018 @12:56PM (#16394237)
There have been sites that check an IP against the vast majority of blacklists for well over a decade, and they've been free as well.

https://encrypted.google.com/search?hl=en&q=how%20to%20check...

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Re:Show HN: OpenBSD Email Service – A free-email alternative by haroldp on Friday February 16, 2018 @01:41PM (#16394676)
I run RBL checks a few times a day in Nagios, so I don't get surprised.
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