On Fri, Apr 09, 2010 at 11:52:06PM -0400, Frank DeChellis wrote: > Hi there, > > We run exim 4.67 and we have Barricade MX as our gateway filter. We > installed the filter and changed our MX record 3 weeks ago. The filter > works great, but lots of mail is still getting sent directly to our SMTP > server. I can say, with great certainty, that 100.1% of the email going > directly to our SMTP is spam.
So, let me just check I've got this right: * Exim is accepting connections on port 25 from any IP * the Barricade box connects directly to Exim * so if Exim accepts a connection from the Barricade box, it should process the mail as normal * and if Exim accepts a connection from anywhere *other* than the Barricade box, it is (as you say) 100.1% spam Have I understood correctly so far? Final question: before you changed your MX record 3 weeks ago, was the TTL on that (old) DNS record less than 3 weeks? If yes, then your assertion about 100.1% spam is correct (give or take 0.1%), so you can either: * configure your firewall to allow connections to Exim only from the Barricade box or * have Exim deny all connections except those that come from the Barricade box (deny !hosts = $ip.of.barricade.box in acl_smtp_connect) If the Barricade box does something /other/ than connect directly to Exim, then none of what I've said above applies, and you should describe your set-up in more detail. -- Dave Evans http://djce.org.uk/ http://djce.org.uk/pgpkey
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