full-disclosure - Block notification / bounce mails (as in DDOS)

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From: aditya.deshmukh at online.gateway.technolabs.net (Aditya, ALD [Aditya Lalit Deshmukh])
Subject: Block notification / bounce mails (as in DDOS)

> One think that crossed my mind later on was :
> - change my mx-records to one mailhost 'X' that's on my netblock 
> (so making 
> sure that possibly the backup-mailexchangers don't get annoyed)

here i control my mx and dns records so i can do this without doing anything to the isp so i use this solution

> - contact my isp and ask them to block all traffic directed to 
> 'X' to port 25 
> on their border routers

this will also work without any probs, infact the mx pointing to localhost might stop all your mail which even this soultion will do ;) how about something like postfix + spamassassin to stop accepting mail that is spam it coluld be eaisily done by one spamasssin rule 


-aditya


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