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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: IETF SMTP Working Group Proposal at smtpng.org
At 2:15 PM -0700 2002/08/21, <[email protected]> wrote: It's bad enough waiting for DNS responses so that you can determine whether or not the envelope sender domain even exists. Now you want to slow down every single e-mail transaction by many, many, many orders of magnitude so that you can do a callback on each and every connection?!?Your quite wrong. With email we do in fact know "phone" for the calling party - its their FROM address and for callback we can specify if we trust or do not trust the other party to provide some different domain, so they may not be given a change to specify where to callback to. As example If they are trying to send email from <[email protected]> the callback would have to go to somedomain.com mail server and the callback must use the authorization code given during initial mail call. The callback can also be authenticated with TLS giving even more security that somedomain.com is a real operation. This will prevent 99% of spammers just there. Man, wanna talk about ideas that would bring all e-mail to a complete stop across the entire Internet? Imagine what it would be like if AOL did this, so that it could take five, ten, or even fifteen minutes just to get one callback on one message, if the remote server was slow enough. Now, if you start up a sendmail queue runner every sixty minutes, you only need a very small number of messages in your queue before you start stacking up more and more and more sendmail processes, until such time as you run out of memory, your mail server crashes, and you might potentially lose all your queued e-mail. Jeezus. Do you have to be the one guy who got blamed for shutting down all e-mail across the entire Internet on "Black Tuesday", just to see the flaws in this plan?!? -- Brad Knowles, <[email protected]> "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, Historical Review of Pennsylvania. GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E W+++(--) N+ !w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++) tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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