Hi!
but suppose the SPAMMER just loads up the body with random domains - that means lots of surbl calls. It seems too easy for spammers to foil this technique.
They can also do that with adding headers on the mail envelope and so on. In the end they want people driven to their websites, so would not make sense i think. But surely, could be multiple hits. Thats why large servers are better off running local copy's of a RBL (any RBL).
Bye, Raymond.