Google Public DNS vs Postgrey
A side-by-side look at Google Public DNS and Postgrey. For an in-depth review of either product, follow the links below.
Google Public DNS
Network & Admin
Google Public DNS is a free Domain Name System (DNS) service offered by Google that provides alternative DNS server addresses for home networking routers and devices. It aims to provide a faster, more reliable and secure way for devices to convert website names into IP addresses.
dnsnetworkinggoogle
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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