As a carrier, we at ACSI have issued a statement that we cannot be
responsible for customer traffic. I know that legally we cannot filter
any customer traffic, but I am really getting sick of getting emails
about customers that continue to send unsolicited emails. We as a
community need to come up with a common carrier policy on how to handle
such customers and how to deal with complaints.
Talk to you company lawyer about what you legally can and can not do.
Even common carriers have a lot of leeway writing their tariffs. Yes,
tariff writing is a business decision. Common carriers write the darndest
things in their tariffs. And even more amazing, if you had a smart
lawyer write the right things, you can get a court to enforce those
darndest things too.
Personally, I would be happy if the IETF-RUN group put out a document
on the right and wrong way to complain. Spamming your complaint about
spam is a bit hippocritical.