1. B

    SPF failing

    I have recently enabled SPF, DKIM and DMARC on my NAS running mailserver. All seemed to be working fine until I got messages from people trying to send me mail that it was bouncing. On investigation, it only when the MailServer perfoms an spfquery on an incoming message and the response is too...
  2. WST16

    SPF, DKIM and DMARC. 2019-04-11

    If you’re a brave soul who’s feeling adventurous and about to embark on setting up your own mail server on your DiskStation, this is a very helpful article that explains SPF, DKIM and DMARC.