I belong to several mailing lists (that I want to receive) but they are being routed to my spam folder even though I have added them to the whitelist.  I looked at the full headers and it is indicating an SPF fail, for example:

Authentication-Results: mx.zoho.com;
    spf=fail (zoho.com: domain of newsletter.newyorker.com does not designate 65.55.111.169 as permitted sender) smtp.mailfrom=NewYorker@newsletter.newyorker.com;

Is there a way to fix this?  The whitelist doesn't work, and I also have a mail rule that send newsletters to a specific folder, but the spam filter overrides both of these.