There are two mailing lists for interaction about CliMAF :
climaf at meteo dot fr : for communicating toward the CliMAF development team
climaf.users at meteo dot fr : for getting news and for communicating among CliMAF users. You can register to this list my sending a mail to sympa@meteo.fr with the single following line in the subject, and an empty body:
subscribe climaf.users
There is also an issue tracking page on GitHub