OpenNIC vs Postgrey
A side-by-side look at OpenNIC and Postgrey. For an in-depth review of either product, follow the links below.
OpenNIC
Network & Admin
OpenNIC is an alternative DNS root system that promotes freedom of choice and privacy for internet users. It offers an alternative to the traditional ICANN-regulated DNS root servers.
privacysecurityalternative-root
Postgrey
Network & Admin
Postgrey is an SMTP proxy program that temporarily delays mail delivery to help mitigate spam. It uses greylisting to reject initial email delivery attempts, forcing email servers to retry sending messages and confirming they are not spammers.
greylistingsmtpemail-deliveryantispam
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