Google picked up Postini in 2007 to close the gap between its Gmail application and the more enterprise-ready platforms like Exchange and Lotus Notes. The service acts as an intermediary between email servers and the outside world and allows an extra layer of encryption/security/discovery/filtering that helped Gmail become the Google Apps platform many businesses now rely on. However, it appears Google is ready to move on.
Google announced it would integrate/merge Postini’s services into Google Apps/File Vault. For those who use Postini with Exchange or Lotus Notes, Google will be dumping you.
Interestingly, Google said it would have a solution for Message Encryption that it will announce later this year. From the direction Google is going, we are likely to see that integrated into Google Apps and probably Gmail too. That would be nice.