SpamAssassin to my knowledge doesn't punish any TLDs out of the box.
If a system is blocking mails because of the TLD, then that is the fault of
the receiving server, and has nothing to do with SpamAssassin itself,
especially since SpamAssassin doesn't block any mails.
This is a configuration on
That was discussed in a previous topic on this mailing list, but it can be
done with:
askdns DNSWL_DWL_HI _DKIMDOMAIN_.dwl.dnswl.org A /^127\.\d+\.\d+\.3/
tflags DNSWL_DWL_HI nice net
describe DNSWL_DWL_HI dwl.dnswl.org high trust
score DNSWL_DWL_HI -3
askdns DNSWL_DWL_MED