The problem is with the alignment requirements of DMARC. That can't be easily fixed without breaking existing mailing list functionality.and to give others mail services had made the necessary changes.
Yahoo recognizes that "Yahoo is the first major email provider in the world to adopt this aggressive level of DMARC policy on behalf of theirs users."
to protect users we do not need to be aggressive .
С уважением,
mohammed serrhini
serrhini@xxxxxxx