Technical measures:
Short-Term
- RCPT TO response codes signifying acceptance levels, EG:
- 250 (default) what the law allows by default
- 255 (stiff) no solicitations at all
- 259 (extreme) no trespassing -- authorized senders only
- 25x allows interoperability but other codes may be more useful,
- especially considering different jurisdictions will likely need
their own codes
- organizations can set default as policy requires, or can allow
users to set according to preference
- virtual "no soliciting" signs may be more appropriate in some cases.
- allow receiver to provide an (optional) indication of the receiving
host's or users's legal jurisdiction(s), so that the spammer can't
claim they don't know which set of rules apply.
- Bill