Reference Library · v2.0

Configuration controls, explained in operational context.

Browse PowerMTA directives and Postfix parameters. Each page includes purpose, syntax guidance, production checks and version cautions.

PowerMTA Reference

32 foundational directives covering listeners, VMTAs, policies, rates, backoff, signing and logging.

26 essential main.cf parameters for identity, relay safety, routing, TLS and queue control.

NEW IN V3.4

Search 120 response patterns by code, provider, category, severity and diagnostic text.