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Mick Vaites wrote: > The only other thing would be that the catchall points at a bit bin - > :BLACKHOLE: in exim speak. So email not addressed to a real email address is > just dropped. > > That way a dictionary attack doesn't cause unnecessary 'not at this address' > bounces. It's generally considered that the "proper" thing to do is for the recieving MTA to reject the message as soon as it sees an undeliverable address in the RCPT command. That way you have to neither bounce nor accept the message and subsequently drop it, possibly confusing people who have mistyped an address, because your MTA never accepts it in the first place. It's not really desirable that an MTA should accept a message and claim to be able to deliver it, then subsequently bounce it or drop it on the floor. James -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html