-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Aside from the opinions that it's too late to have an explicit bounce address be recognized (and catch-all systems could be told to explicitely bounce it)... the biggest problem with the explicit bounce is simple... I just send: MAIL From: Nick Levinson <nick_levinson@xxxxxxxxx> RCPT To: <sure-to-bounce@xxxxxxxxxxxxx> ... and you may get backscatter. Sure, we may be able to write that the SMTP transaction should fail immediately, but then, that wouldn't help your situation, because you wanted the bounce message from the remote mailer, not from your mailer. Of course, many mail systems are unable to make the SMTP transaction fail so soon, and backup-MXs can not do it at all, so we wouldn't even be able to write such text. - -- ] Y'avait une poule de jammé dans l'muffler!!!!!!!!! | firewalls [ ] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[ ] mcr@xxxxxxxxxxxxxxxxxxxxxx http://www.sandelman.ottawa.on.ca/ |device driver[ ] panic("Just another Debian GNU/Linux using, kernel hacking, security guy"); [ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Finger me for keys iQEVAwUBSdLIuoCLcPvd0N1lAQKrJQgAreFpnGU1XPCjcRdh1h5A2Rv/qouOUKEr ikNp7MM9jqzNZ5sFjxwav7YNDnASHcoCDY9cyZy8JARF3JqdC+LYffAkR+HQ3oso qqXFl9TA98Dz3HeebhlpCKQKdk6hQ+04hjjEGJcfAcJCGZQ23dlC2HHkrdWBe4Cv xmdOA2sjoXRkq/1nVtW+ZJvW0oT+C9uKWl/6u90oq4i1k6i9GWqaWzXQ/uTrfPtJ 1gwVYYvtWBoI6ZOpA1qmqVkLH86jQo3hjRoGuABbIo+8HWIyJANZlsRiOo/UYNMy 2xfOAkFDsYbiCLEu3WLd0BmD6wFsRvRtD/wbMelcGNGl4+aBiBOnZw== =ZUOX -----END PGP SIGNATURE----- _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf