Author: Graeme Fowler Date: To: exim-users Subject: Re: [exim] IP hearder checking for real time blacklist
On Mon, 2011-11-28 at 13:37 +0000, Kebba Foon wrote: > well some of you might say why not ask the client to clean there
> systems, this will be to much difficult as we an ISP with hundred's of
> client and most of this IP's are behind huge NATed networks you can't
> just tell them to "clean their network".
Yes you can. Many do.
> i will be happy if there is a way to strip of the client IP on my server
> before further transmission to destination mail server. this way i will
> have only the trouble of making sure my server is not blacklisted
> anywhere.
If you strip the Received: headers from the emails traversing your
system then all emails will appear to have originated on your system
itself. That means you are *more likely* to end up being blacklisted as
the only originating information will be yours.
Think about it: if you have clients who are irresponsibly pumping
malware through your gateways, and you hide the originator, your gateway
will appear to be the source.
