dgrey is a greylisting policy server that allows greylist information to be synchronized between multiple mail servers. All information is shared between the nodes and the nodes are equal; there is no master. The nodes may lose communication for a while and still be able to correctly resynchronize later. This works because all nodes keep a log of changes to the database. All communication is done across TCP connections, which can optionally be password protected. dgrey works with mail transfer agents such as Postfix and Exim.
|Tags||Communications Email Filters|
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