Postgrey vs SpamAssassin
A side-by-side look at Postgrey and SpamAssassin. For an in-depth review of either product, follow the links below.
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
SpamAssassin
Security & Privacy
SpamAssassin is a powerful open source anti-spam filter for email. It uses a variety of detection techniques and rules to identify and block spam emails before they reach a user's inbox.
emailfilterspamopen-source
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