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DKIM, ARC, SPF and DMARC authentication in Rust

- 1 min read
Mauro D.
Mauro D.
Project Maintainer

Today the mail-auth library was released, which is an e-mail authentication and reporting library written in Rust that supports the DKIM, ARC, SPF and DMARC protocols. It is the Rust equivalent of OpenDKIM, OpenSPF, OpenARC and OpenDMARC combined in one library (as well as some extras such ARF support). mail-auth includes the following features:

  • DomainKeys Identified Mail (DKIM):
  • ED25519-SHA256 (Edwards-Curve Digital Signature Algorithm), RSA-SHA256 and RSA-SHA1 signing and verification.
  • DKIM Authorized Third-Party Signatures.
  • DKIM failure reporting using the Abuse Reporting Format.
  • Authenticated Received Chain (ARC):
  • ED25519-SHA256 (Edwards-Curve Digital Signature Algorithm), RSA-SHA256 and RSA-SHA1 chain verification.
  • ARC sealing.
  • Sender Policy Framework (SPF):
  • Policy evaluation.
  • SPF failure reporting using the Abuse Reporting Format.
  • Domain-based Message Authentication, Reporting, and Conformance (DMARC):
  • Policy evaluation.
  • DMARC aggregate report parsing and generation.
  • Abuse Reporting Format (ARF):
  • Abuse and Authentication failure reporting.
  • Feedback report parsing and generation.

Sieve filters are now available on Stalwart JMAP v0.2

- 2 min read
Mauro D.
Mauro D.
Project Maintainer

Sieve (RFC5228) is a scripting language for filtering email messages at or around the time of final delivery. It is suitable for running on a mail server where users may not be allowed to execute arbitrary programs as it has no user-controlled loops or the ability to run external programs. Sieve is a data-driven programming language, similar to earlier email filtering languages such as procmail and maildrop, and earlier line-oriented languages such as sed and AWK: it specifies conditions to match and actions to take on matching.