MeTA1 is a modularized message transfer agent (MTA) consisting of five (or more) persistent processes, four of which are multi-threaded. A queue manager controls SMTP servers and SMTP clients to receive and send email messages, an address resolver provides lookups in various maps (including DNS) for mail routing, and a main control program starts the other processes and watches over their execution. The queue manager organizes the flow of messages through the system and provides measures to avoid overloading the local or remote systems by implementing a central control instance. It is simple to configure using a C-like syntax and is secure and efficient. License: Other/Proprietary License with Source Changes: This release fixes a few bugs, most of which are related to createmap and the cdb map type. Two new features were added. The interesting one is that the SMTP server now treats "Relaying denied" errors as "bad" commands. This means that those rejections count for max_bad_commands_per_session and max_bad_commands_per_transaction. This is useful when a client is broken enough to try several relaying attempts.

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