> servers running certain protocols. For example, the rules of the SMTP > protocol... just to name one... require that a client wait until the > server has sent out an initial greeting banner before the client sends > anything to the server. Some SMTP servers are lenient about enforcing > this protocol rule, so in practice it may often not be necessary to wait
A while back "fast talkers" as they were called, were a known signature of some spam bots. The guess is that they would just write the whole SMTP transaction in one write() immediately following the connect() and be done with it. A useful optimization when you're blatting out billions of spam. You don't see a big mention of this in search engines, so I don't know how prevalent they are now. Point being that such an option might be useful to avoid triggering any detectors that might still be looking for this. Mark. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
