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I had found a very thorough server checker (e.g. TLS, DKIM, certificates, PFS, DMARC, you name it) here on the fedi at some point and thought I'd bookmarked it, but just can't find it anymore. Any recommendations from the sysadmin crowd?
Update: thanks for all the replies and suggestions! AFAICT the one I originally found was https://internet.nl, but https://hardenize.com also looks quite thorough.
@floe Fan of Hardenize and internet.nl here
@floe Another vote for internet.nl: thorough checks with actionable results. Also, you get called out for not supporting IPv6 😀
@floe that one also is nice and hosted with privacy in mind https://email-security-scans.org/
@floe
I still just use mxtoolbox.com but here for any alternatives or self-hostable versions others can recommend.
@floe I do like https://mail-tester.com/ and https://dane.sys4.de/
@floe I typically start with https://mxtoolbox.com/diagnostic.aspx and maybe do a test with https://mail-tester.com too. HTH (Hope This Helps) :)
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