Len, Point taken on the numbering thing. My bad. Maybe I should have said there never "should" be any legit traffic, rather than there never "is" any. Technically, there is no legitimate reason for any traffic to hit such a box. Other than a purposefully misconfigured mail server, how/why would mail pass up a server with a priority of 20 vs. one of 50 on the same network, sitting right next to each other? I am guessing that your servers are probably on different networks?
If someone has purposefully violated RFCs to modify their mail server to deliver to the server with the lowest priority first, they deserve to be blocked as far as I am concerned. If they are on a blacklist on top of that, AND are spamming me, well, they get what they deserve. William Van Hefner Network Administrator Vantek Communications, Inc. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Len Conrad > Sent: Thursday, January 27, 2005 1:59 PM > To: [email protected] > Subject: RE: [IMail Forum] SpamCannibal (was another topic) > > > > >The only time that any legitimate traffic should flow through our > >"secondary MX" is when the primary is down completely. > > "never, ever" ??? not very humble, you "IMHO" > > In practice, simply not true, so don't bet any money on it. > > I admin several ISPs' MX1/2 where I see legit traffic hitting > mx2 when mx1 > has been up and handling traffic constantly. If there were > a mx3, I would > expect it to get traffic, too. yes, MOST of the traffic to > backup MXs is > crap, but surprisingly large amt is legit. > > Another error on your part: the MX preference field is > sorted numerically > ascending, such that" > > "1, 2, 3" is effectively the same as "1, 2, 3000". > > Len > > > _____________________________________________________________________ > http://IMGate.MEIway.com : free anti-spam gateway, runs on > 1000's of sites > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
