On 2005-01-10 09:14:35 +1000, Laird Breyer wrote: > On Jan 09 2005, Peter J. Holzer wrote: > > > > Either you're confused or I am. Michael sends me two messages, once as > > > Michael (which is unsolicited, and he's not whitelisted, so gets a CAPTCHA), > > > and once as asrg at ietf.org, which is whitelisted since I've subscribed to > > > the list. > > > > But both messages are sent to an active subaddress, so they are > > accepted without a CAPTCHA. See > > http://home.nyc.rr.com/spamsolution/An%20Effective%20Solution%20for%20Spam.htm > > How would Michael's MUA know the subaddress? It's in your From: header. > Only the list expander knows the subaddress. Michael's MUA sends mail > to the main address, which replies with a CAPTCHA. That's not the way I understood that it works. ISACS rewrites all outgoing mails to contain a unique subaddress for each recipient. Thus all your mails to the mailing-list will contain your subaddress for the recipient asrg at ietf.org, (e.g. <laird.123 at ...>), not your main address <laird at ...>. When Michael hits the group reply button, his MUA will take the addresses from the headers and compose a mail to <asrg at ietf.org> and <laird.123 at ...> (It doesn't know that this is a subaddress, nor what the main address is). hp -- _ | Peter J. Holzer | Je höher der Norden, desto weniger wird |_|_) | Sysadmin WSR | überhaupt gesprochen, also auch kein Dialekt. | | | hjp at hjp.at | Hallig Gröde ist fast gänzlich dialektfrei. __/ | http://www.hjp.at/ | -- Hannes Petersen in desd
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