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Gross is a greylisting server. The features that make gross stand out from other greylisters are:
- it's blazingly fast
- it's amazingly resource efficient
- it can be configured to query DNSBL databases, and enforce greylisting only for hosts that are found on those databases
- it can block hosts that match multiple DNSBL's
- it can be replicated and run parallel on two servers
- It supports Sun Java System Messaging Server, Postfix, Sendmail and Exim.
An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...
Philter is a mail filter written in Python to sort mail in a Qmail style Maildir on Linux. It is used in association with a mail fetching tool like getmail. A properties file is used to setup the basic configuration.
Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.
Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.