This release includes a critical bugfix in subdomain matching, along with the service provider that helped discover the bug.

This releases fixes cache handling, and also corrects the Yandex email provider to distinguish between their public and hosted email services.

• mxprobe now distinguishes between soft and hard fails
• mxsniff command line now produces valid CSV or JSON (verbose mode)
• Verbose output now includes canonical representation of an email address to facilitate comparison