The server writes a TXT value longer than 255 bytes the way BIND does:
quoted chunks inside parentheses, one per line. The zone parser read a
line at a time, so an RSA DKIM key was the record "(" and never matched
what public DNS returned. The Security page (SS-13), the DNS wizard's
record checks and the domain hover card all reported DKIM missing for
every domain with an RSA key.
Lines inside parentheses are now joined into one record first, with the
parentheses dropped and any inside a quoted value kept.
jcoffey-dev