On Sun, 13 Apr 2008, Barry Shein wrote:
For example, and it's only an example don't quibble the example, defining a list of return SMTP codes which are actually specific and meaningful like (let's assume they should be 5xx, maybe 7xx would be a better start? Policy failure codes) [...] and so on, a taxonomy which could then at least be dealt with intelligently by sending MTAs and supporting software rather than each side cooking up their own stuff.
See RFC 3463. Unfortunately it doesn't help much to solve the problem it was designed for. I ranted about this a while back... http://www.ietf.org/mail-archive/web/ima/current/msg00588.html Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ BAILEY: NORTHWESTERLY 6 TO GALE 8, VEERING SOUTHEASTERLY 4 OR 5. MODERATE OR ROUGH. RAIN OR SHOWERS, THEN FAIR. MODERATE OR GOOD.