so aside from the abusers his customers will tend to be heavy on single-recipient administrative emails rather than mailing lists.
Then, if they are truly one-to-one administrative emails, that's rather odd if they are generating a disproportionate number of spam complaints, dontcha think? Unless they are inserting too much marketing into to them (always dicey).
Failure to do so can (and usually does) result in termination of their accreditation
Accreditation of what?
I'll respond more fully to this offlist, as it's OT, but the short answer is that we accredit email senders who are adhering to best practices (not unlike ReturnPath, only we're the other white meat). Anne Anne P. Mitchell, Esq. Author: Section 6 of the CAN-SPAM Act of 2003 CEO/President Institute for Social Internet Public Policy http://www.ISIPP.com Member, Cal. Bar Cyberspace Law Committee How do you get to the inbox instead of the spam filter? SuretyMail! Helping businesses keep their email out of the junk folder since 1998 http://www.isipp.com/SuretyMail