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.
Release Notes: This release included a fix to handle an error condition if FFR_CERT_PINNING is used.
Release Notes: This release fixes IPv6-related deficiencies and adds new features for TLS (Digest) and mcp (failure_max).
Release Notes: This release adds features to deal with TLS interoperability problems.
Release Notes: This version enhances handling of failures of processes that are under control of mcp and adds cert pinning as an experimental feature.
Release Notes: This release fixed a stack alignment problem for *BSD based OSs in statethreads, which caused crashes when compiled against a recent OpenSSL version which uses asm code for SHA functions. It also introduced an incompatible change for the lookup algorithm in maps for IP addresses, fixed a "dot-stuffing" bug in contrib/femail.c, and added some more TLS and IPv6 related enhancements.