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DKIM Selector without underscore


ZARk

Question

Hello

I just used the port25 checker, and received an error message

https://www.port25.com/authentication-checker/

 

Apparently, from what i understand, it doesn't like the fact that our dkim selectors have an underscore.

Quote

----------------------------------------------------------
DKIM check details:
----------------------------------------------------------
Result:         permerror (syntax error in s= tag: Error in "dkim_43": invalid character U+005F in domain label)
ID(s) verified: 
DNS record(s):


Maybe it's just their script being picky, or maybe it would be best to avoid the underscore in the selector as to avoid issues with other parsers ?

 

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