DHS orders agencies to adopt DMARC email security
fedscoop.comFrom https://www.cyberscoop.com/dhs-dmarc-mandate/ :
> By Jan. 2018, all federal agencies will be required to implement DMARC across all government email domains.
> Additionally, by Feb. 2018, those same agencies will have to employ Hypertext Transfer Protocol Secure (HTTPS) for all .gov websites, which ensures enhanced website certifications.
Requiring TLS (and showing an unlocked icon for non-TLS-secured emails) would also be good.