fuglu dkim signs none existing headers

fuglu --version 1.2.0

dkimpy --version 1.0.5

host OS gentoo

[DKIMSignPlugin]

signheaders=From,Sender,Reply-To,Subject,Date,Message-ID,To,Cc,MIME-Version,Content-Type,Content-Transfer-Encoding,Content-ID,Content-Description,Resent-Date,Resent-From,Resent-Sender,Resent-To,Resent-Cc,Resent-Message-ID,In-Reply-To,References,List-Id,List-Help,List-Unsubscribe,List-Subscribe,List-Post,List-Owner,List-Archive

signheaders=From,Subject,Date,To,Message-ID

signbodylength=False

selector=default

privatekeyfile=/etc/fuglu/dkim/${header_from_domain}.key

canonicalizebody=relaxed

canonicalizeheaders=relaxed

the big list of signheaders sign header that is not in email, i think signheaders should only be a list of headers to accept to be signed if found

another one, would it be possible to use

selector=${header_from_domain}_default

so selector is diffrent pr domain ?