greylisting freeware downloads
Anti-Spam SMTP Proxy Server
2.6.5 21218 freeware download... Proxy server which implements auto-whitelists, self learning Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, ... Features: Multiple Weighted DNSBLs Multiple Weighted URIBLs Greylisting Weighted Regular Expression Filtering Bayesian Penalty Box SenderBase ...
Email List Validator
1.0.2.1 freeware download... unavailability detection, Mailbox existence checking, Catch-All testing and Greylisting detection. ...