Identified Internet Mail


Note: Identified Internet Mail (IIM) and Yahoo's DomainKeys were merged and formed the basis for DomainKeys Identified Mail (DKIM), an IETF standard described in RFC 6376. Accordingly, IIM is no longer supported and is provided here primarily for historical interest.



This is a reference implementation of Identified Internet Mail - a signature based message authentication mechanism that can be used to combat phishing and spam.

The package includes a Sendmail milter and a key registration server.


Royalty-free, worldwide, non-exclusive licensing information for this project is available here.


The Identified Internet Mail specification can be found here.

Last modified on 19-Feb-2014 21:20 -0800 Logo