Hello Charles
Charles Buckley wrote:
The ETH should know better than to be using such people anyway -- I have informed them of the problem.
At ETH Zurich it depends to which subdomain you are sending e-mail, because some departments run their own mail server with their own policies.
But I guess most others depend on the mail service provided from Informatikdienste (ID). I once had a chance to attend a presentation of their mail setup (especialy the mx hosts with the spam and virus filtering) and therefore I know that they are using a few DNS Blacklists to drop mail at the smtp communication. But I don't remember which. Contacting the postmaster at ethz.ch should help.
bye Fabian