John Horne wrote:
> I noticed a frozen bounce in our mail queue for a message which seems to
> have come from (envelope sender)
> '4526433.tHjd3LnMP.@pcrm.unikorea.go.kr'.
>
> As far as I can tell, the '.@' part of the address is invalid according
> to RFC2822. So why did exim accept it if it is syntactically invalid?
The more appropriate question to ask is why would exim not deny a non
existing email address at smtp connect? That way the least bandwidth
will be (ab)used.
But the answer for both is because it has not been configured to do so.
Either by whoever installed it or maybe it's by default. You can find
out in the manual,
http://www.exim.org/index.html, how to tell exim to
refuse non existing addresses and/or syntactically incorrect addresses.
Greetings,
Jeroen
