Open Relay Checker before Opening MTA
bje at redhat.com
Sun Feb 10 10:50:47 EST 2002
>>>>> "Alex" == Alex Satrapa <grail at goldweb.com.au> writes:
>> I realise that Neil's idea would prevent his system from *accepting*
>> mail from open relays. Another approach I have heard about is to only
>> accept mail for a domain (say, domain.com) from domain.com's listed MX
>> hosts. I don't know which MTAs implement this, though--anyone?
Alex> The only catch I can see with this is that a listed MX may only be for
Alex> incoming mail, with outgoing mail sent by other machines.
Yes, it's not foolproof -- but if you did it, I bet you'd stop
receiving spam. :-)
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