A Go library and tools to authenticate e-mails.

Libraries

• [dkim]: create and verify [DKIM signatures][DKIM]
• [authres]: create and parse [Authentication-Results header fields][Authentication-Results]
• [dmarc]: fetch [DMARC] records

Tools

A few tools are included in go-msgauth:

• dkim-keygen: generate a DKIM key
• dkim-milter: a mail filter to sign and verify DKIM signatures
• dkim-verify: verify a DKIM-signed email
• dmarc-lookup: lookup the DMARC policy of a domain

License

MIT

[DKIM]: https://tools.ietf.org/html/rfc6376 [Authentication-Results]: https://tools.ietf.org/html/rfc7601 [DMARC]: https://tools.ietf.org/html/rfc7489 [dkim]: https://pkg.go.dev/github.com/emersion/go-msgauth/dkim [authres]: https://pkg.go.dev/github.com/emersion/go-msgauth/authres [dmarc]: https://pkg.go.dev/github.com/emersion/go-msgauth/dmarc