Dgrey is a software tool that aids in synchronizing greylist information across various email servers. It acts as a greylisting policy server.
Moreover, you won't have to worry about nodes losing communication for a period because they can still re-sync at a later stage. This is due to the fact that all the nodes keep a log of changes made to the database. In terms of security, dgrey carries out all communication over TCP connections, which you can password-protect if needed.
One of the perks of using dgrey is that it seamlessly integrates with popular mail transfer agents such as Postfix and Exim. The software was written in Perl by its developer, Oskar Liljeblad, and is based on, and inspired by, the Postgrey software created by David Schweikert.
Overall, dgrey is a top-notch software option that provides an efficient and effective way of syncing greylist information and safeguarding your e-mail servers.
Version 0.1.0: N/A