s...@cs.columbia.edu: > I am seriously suggesting that a redirect mechanism -- perhaps the email > equivalent of HTPP's 301/302 -- would be worth considering.
We already have SMTP's 221 and 521 response codes for this. But because the response text is free-form there's no way to reliably parse out the new address. Fixing this is a bit tricky since the SMTP grammar defines <Reply-line> in a way that makes it difficult to return the sort of structed response you would need. --lyndon
