Allow up to 63 characters TLD in email address #9486
Merged
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We should allow for 63 characters TLDs, according to RFC 1035, instead of arbitrary 10.
https://en.wikipedia.org/wiki/Domain_Name_System#cite_ref-rfc1034_1-2
As far as minimum length of 2 is acceptable, becuse IANA says that it isn't likely to introduce 1 character TLD, maximium length is too short.
Also updated valid TLDs list to current state: http://data.iana.org/TLD/tlds-alpha-by-domain.txt
This partially resolves #9485