Stefano wrote:
Why are we excluding that they are bounces?
If you send a message from [email protected] to
[email protected] then james will receive the message, fail to
find a local user named "nonexistant" and create a bounce to
[email protected].
Good point.
Ken... as I said earlier I don't think you need worry too much about
your apparent spam records in the log files. As Stefano points out,
your server is probably trying to contact all these email addresses to
tell them that nobody by that name exists on your server... in other
words a bounce message. Unfortunately, this is almost as bad as a rogue
server because it causes what is known as 'backscatter'. Ideally, it
should use a little intelligence to decide if the incoming message that
caused the bounce was itself spam. If it is then there is no need to
send a bounce message.
You shouldn't turn bounce messaging off completely because that would
prevent legitimate bounces from informing the sender that their email
didn't get through.
I approach this by running all unauthenticated email through the spam
filter and only bouncing those messages which make it through the spam
filter but don't have a valid destination address.
Regards,
David Legg
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