Messages in this thread | | | Subject | Re: Anti-SPAM Suggestion... | Date | Sat, 21 Aug 1999 11:43:40 -0400 | From | Shannon <> |
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In message <99081920224404.01190@mammoth.penguinpowered.com>, Fred Reimer write s:
> > Or why not verify that the from address is a valid address before > accepting the mail...
Very simple: there is no fool-proof way to do this.
How do you handle...
* users behind firewalls * UUCP mail users * mail-only accounts that cannot be verified * other misc ISP funkiness * users whose machine cannot be reached... i.e. my machine is escape.widomaker.com but you'll never be able to reach it so is the verification and subscription software going to be smart enough to check/allow <user>@<domain> instead of insisting on finding a match at an exact machine?
The last issue has given me a lot of grief for some mailing lists because my mail headers were rewritten to lose my machine name and so they could not verify me. In fact, sometimes I could not even unsubscribe.
Most people are at the mercy of their ISP so they cannot always fix things themselves. As time goes on, this will likely get worse since ISPs need only cater to Windows users who could not care less about how their headers look.
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