Hello, Topica has started using the Habeas anti-spam system. It works like this: If you are licensed to use Habeas, then you can insert the Habeas haiku into your headers. ISPs can use the haiku as a basis for "white-listing" your bulk email. If you use the haiku without license, then you can be sued. I guess the effectiveness of this will be determined by how big the legal hammer is that Habeas can throw at spammers, particularly ones that operate outside the US, and also by how many ISPs will actually honor the habeas haiku. A couple of open questions. Here are partial headers (without the haiku): X-Habeas-SWE-5: Sender Warranted Email (SWE) (tm). The sender of this X-Habeas-SWE-6: email in exchange for a license for this Habeas X-Habeas-SWE-7: warrant mark warrants that this is a Habeas Compliant X-Habeas-SWE-8: Message (HCM) and not spam. Please report use of this X-Habeas-SWE-9: mark in spam to <http://www.habeas.com/report/>;. TTYL, Bill Holmes