When trying to get certificate for this domain - I get the error “acme: Error 400 - urn:acme:error:malformed - Invalid character in DNS name”. Can anyone explain, what exactly is wrong with this domain?

Invalid character in DNS name: www.-----2016.artur-aviv.com

fxposter February 28, 2017, 6:25pm 5

RFCs are great but it turns out that everyone actually allows such domains

Anyway - thanks for fast answers!

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