On Mon, Aug 08, 2011 at 12:29:38PM -0600, Stephen Atkins wrote:
> Hello everyone. I've been searching around trying to figure this
> out but it just eluding me. We've been getting a ton of mail from
> a certain domain which is all spam. Problem is that our mail
> system is also generating a bounce for each try.
Then your system is misconfigured. You should never accept mail that
you cannot deliver. First solve this problem, and then the other one
will be minor.
http://www.postfix.org/DEBUG_README.html#mail
http://www.postfix.org/ADDRESS_CLASS_README.html
> I would like to block absolutely everything to or from this
> domain no matter what. I found a couple of examples but they
> don't seem to want to work for me.
That's a different, relatively trivial matter.
First, explain what "mail from a certain domain" means. Do you mean
the easily and commonly forged sender address? If so, you want a
check_sender_access lookup:
example.com reject
This is fine if you are absolutely certain that no legitimate mail
would ever have a sen...@example.com address.
If OTOH you are talking about the client or HELO hostname, there
would be different lookup types needed. And as to why the examples
are not working, not much we can do about that until you read:
http://www.postfix.org/DEBUG_README.html#mail
> I can post my conf and hash files if needed.
I don't suppose anything more than a wild guess is possible until you
do.
http://www.postfix.org/DEBUG_README.html#mail
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