Postgrey Alternatives
Postgrey
Postgrey is a Postfix policy server implementing greylisting developed by David Schweikert.
When a request for delivery of a mail is received by Postfix via SMTP, the triplet CLIENT_IP / SENDER / RECIPIENT is built. If it is the first time that this triplet is seen, or if the triplet was first seen, less than 5 minutes ago, then the mail gets rejected with a temporary error. Hopefully spammers or viruses will not try again later, as it is however required per RFC.
Best Commercial Postgrey Alternatives
For the best Postgrey alternative check out these alternatives which will work with your device & platform. There are several Postgrey-like software that you might want to check as well.
MailRoute
CommercialWebMailRoute provides a hosted service for mail protection from virus and spam. MailRoute is a secure, hosted cloud email filtering service that you can have up and...
SpamSieve
CommercialMacSave time by adding powerful spam filtering to the e-mail client on your Mac. One of the only standalone spam filtering softwares for Mac.
Features:
- Filters
- Mac Apps
Happy Moose
CommercialMacWindowsLinuxWebHappy Moose is a super-efficient cloud anti-SPAM solution for organizations. It stops up to 99.7% of SPAM, and no false positives. It means that you don't need to...
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