Iran’s cyber defense headquarters has succeeded in making internal mail servers which would enable Iranian organizations and bodies to use local email addresses. “One of the most important problems in the cyber arena in Iran is that many individuals and even university professors are using email services like Gmail and Yahoo and have no local email,” Rahimi said, Head of Iran’s Cyber Defense Headquarters. The key task of cyber defense is to prevent computer worms from breaking into or stealing data from Iran’s maximum security networks, including nuclear facilities, power plants, data centers and banks.
Source: https://thehackernews.com/2012/03/iran-makes-internal-email-servers.html