Go smtpd

Package smtpd implements an SMTP server in golang.

Features

STARTTLS (using crypto/tls)
Authentication (PLAIN/LOGIN, only after STARTTLS)
XCLIENT and PROXY protocol (for running behind a proxy)
Connection, HELO, sender and recipient checks for rejecting e-mails using callbacks
Configurable limits for: connection count, message size and recipient count
Hands incoming e-mail off to a configured callback function

The package is tagged with semantic version numbers, making it suitable for use in a Go Module.

If you end up using this package or have any feedback, I'd very much like to hear about it. You can reach me by email.

Name		Name	Last commit message	Last commit date
Latest commit History 72 Commits
.github/workflows		.github/workflows
_examples/dkim-proxy		_examples/dkim-proxy
LICENSE		LICENSE
README.md		README.md
address.go		address.go
envelope.go		envelope.go
example_test.go		example_test.go
go.mod		go.mod
protocol.go		protocol.go
protocol_test.go		protocol_test.go
smtpd.go		smtpd.go
smtpd_test.go		smtpd_test.go
wrap.go		wrap.go
wrap_test.go		wrap_test.go