Re: OT: sender address verification .. is it feasible

[ha...@t-online.de]

Hi,

one of the problems about that: some legitimate mail from automated systems (e.g. a website
registration) is sent as

From: noreply@domain.com
Subject: registration

Please visit http://domain.com/register/id=xyz
In case of problems please write to staff@domain.com

SAV will just trash these mails

Wolfgang Hamann

>> 
>> I had read of sender address verification(SAV) about a year back, some
>> people had done that too. I found the idea too unfeasible for checking
>> from-addresses before accepting mail at MTA.
>> 
>> 
>> The scene is different today now with 90% of all mail being spam it
>> seems not that bad an idea anyway
>>   My guess is around 50% of these spams dont have a deliverable from-id
>> Waste resource and bandwidth accepting mail and scanning it or waste
>> time probing for correct from ids ( and also risk being blacklisted for
>> probes ) .. which is better.
>> 
>> IMHO if SAV becomes some standard then domains can have something like
>> DNS records for all correct ids and probing will become a lot easier
>> 
>> Is anyone already having experiences with sender address verification
>> 
>> Thanks
>> Ram
>> 
>> 
>> 
>> 
>> 
>>