--On 15 November 2008 13:21:28 -0500 Troy Settle <[EMAIL PROTECTED]> wrote:
> > Peter Bowyer wrote: >> 2008/11/13 David Chait <[EMAIL PROTECTED]>: >> >>> All, >>> >>> I have been looking for an ACL to effectively restrict >>> incoming mail claiming to be from my own domain to only a specific set >>> of Ips that I own, and drop all other spammers/imposters, how would I go >>> about formulating this? >>> >> >> deny message = Go away, forger >> sender_domains = +list_of_my_domains >> !hosts = +list_of_my_hosts >> >> > > Be careful with this though. There are legitimate reasons for mail from > your domain(s) to originate from outside of your own network. PayPal, > Ebay, Criaigslist, and others will send/forward legitimate messages with > 'forged' credentials. Not saying it is right for them to do so, but it > happens nonetheless. We do something similar to this, but before rejecting the email, we test for the presence of a header that we've added. That allows forwarded email to return to use. We absolutely forbid other sites to originate email in our domain, and we wish that other sites would follow suit. There's absolutely no way that spam will ever stop if this practice is allowed to persist. > > -- > Troy Settle > Pulaski Networks > 866.477.5638 > -- Ian Eiloart IT Services, University of Sussex x3148 -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
