https://www.circleid.com/blogs/ Postings from on CircleID en Copyright 2026, unless where otherwise noted. 2026-03-31T21:29:00+00:00 https://circleid.com/posts20120615_interoperability_testing_dmarc_email_anti_spoofing_specification https://circleid.com/posts20120615_interoperability_testing_dmarc_email_anti_spoofing_specification More...]]> 2026-03-31T14:29:00-07:00 https://circleid.com/posts20100618_bp_and_incident_response_how_well_do_oil_and_security_mix https://circleid.com/posts20100618_bp_and_incident_response_how_well_do_oil_and_security_mix More...]]> 2026-03-31T14:29:00-07:00 https://circleid.com/posts20090414_thoughts_on_future_of_email_authentication https://circleid.com/posts20090414_thoughts_on_future_of_email_authentication Town Hall Meeting and Email Authentication Roundtable next week as well as the RSA Conference, I decided to pause and think about where we are and where we might be headed with regard to email authentication. Over the years, many of us have collectively worked to provide a framework for authenticating email... More...]]> 2026-03-31T14:29:00-07:00 https://circleid.com/posts20090323_exploring_dkim_adsp_edge_cases_missing_message_id https://circleid.com/posts20090323_exploring_dkim_adsp_edge_cases_missing_message_id DKIM/ADSP edge cases that may not be generally recognized or understood. Many people advocate DKIM/ADSP adoption without fully recognizing potential implementation and operational issues. The fact is that the email messaging environment is fraught with opportunities for poor outcomes because of common practices that need to be considered or poorly understood implementations that are not considered... More...]]> 2026-03-31T14:29:00-07:00