I have often thought that this would be a good idea. Attach free CA certificate to your domain registration and then use it to issue certs for user accounts.
You could still use alias accounts, you would just have to create an cert for it.
If you required a valid cert to go with each email then you could block certs that are issued by a domain name just like the open relay block lists.
All of this work could be done by the mail servers and not the clients.
The best part of a procedure like this is that no actual email would get transferred and therefor it would cut down on the wasted bandwidth.
Also privacy would not be affected as the cert does not say who you are, just that the email is from a certified user.
AUS: 1Mb frame or DDS link: $AU18,000 per year + $0.19 per meg (carrier and data)
US: 1.5MB ADSL: $US60 per month unlimited traffic
OK I'll admit this is not available to all of the US but the AUS 1MB frame is only available within 12Km of the POP (i.e. CBD of Aussie cities) outside of this you only get some expensive ISDN and some unreliable PSTN
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I have often thought that this would be a good idea. Attach free CA certificate to your domain registration and then use it to issue certs for user accounts.
You could still use alias accounts, you would just have to create an cert for it.
If you required a valid cert to go with each email then you could block certs that are issued by a domain name just like the open relay block lists.
All of this work could be done by the mail servers and not the clients.
The best part of a procedure like this is that no actual email would get transferred and therefor it would cut down on the wasted bandwidth.
Also privacy would not be affected as the cert does not say who you are, just that the email is from a certified user.
compare US vs AUS
AUS: 1Mb frame or DDS link: $AU18,000 per year + $0.19 per meg (carrier and data)
US: 1.5MB ADSL: $US60 per month unlimited traffic
OK I'll admit this is not available to all of the US but the AUS 1MB frame is only available within 12Km of the POP (i.e. CBD of Aussie cities) outside of this you only get some expensive ISDN and some unreliable PSTN
shit!