Posts by Franck Martin

The change to IPv6 creates new challenges to keep spam out of email. Because of the sheer size of the IPv6 space, it seems more efficient to build a domain-blocking and reputation system rather than an IP-blocking system. But how do we ensure emails over IPv6 have an authenticated domain? Email authentication in the IPv4 landscape There is plenty of...

Editor's note: This blog has been updated since publishing. In a previous post, I introduced DMARC, a new tool to detect genuine emails. By publishing a DMARC record, you can start receiving aggregate reports from email receivers, and analyze them to identify genuine email streams and the emails streams that impersonate your domain. Now, it's time for the next...

As LinkedIn grows, our name and reputation are used in phishing attacks with increasing frequency. Members and non-members alike have trouble distinguishing a genuine LinkedIn email from one of the many scam email trying to direct users to illicit websites. LinkedIn is not the only company to face these challenges, so we teamed up with a number of other...