This module provides lookup of SPF records including support for SenderID. It's thought as an alternative to Mail::SPF in cases, where you don't want to block waiting for the SPF response but instead want to continue doing other stuff or doing multiple SPF in parallel w/o using multiple threads or processes. See perldoc of Mail::SPF::Iterator for more details. THANKS: - Thanks for http://www.genua.de to let me publish and maintain this module at CPAN. - Thanks for http://www.openspf.org for providing the useful test suite. - Special thanks to grunk for a good code review.