This probably teeters on the realm of ethical, but I have to do some testing for a scenario, and I need to detail what a spoofed email coming from an open relay looks like (headers and such). Does anyone know of a repository of open relay servers? Everything I've found so far is either outdataed or just leads to software to test for open relays.
If this crosses a line, feel free to delete.
Poking at security since 1986. +++ATH