I think he's saying if it uses their address, but does not originate from their network, then it's spam. This is exactly what we use SPF to prevent.
Darin. ----- Original Message ----- From: "Dan Barker" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, July 29, 2005 3:28 PM Subject: RE: [IMail Forum] Large Rules list If these email addresses exist, how will you know if it's spam? If they don't, then just turn off the NOBODY aliases, and you're golden! (Of course, to turn off the nobody, you'll need to set up the aliases you've been depending on nobody to handle, like abuse, postmaster, whatever). Dan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of James Nelson Sent: Friday, July 29, 2005 3:17 PM To: [email protected] Subject: [IMail Forum] Large Rules list I have an Imail server that hosts 3 physical domains, 20 virtual domains, and about 20 other domains that alias to these. Because of this, we get a fairly large number of spoofed emails from things like '[EMAIL PROTECTED]', '[EMAIL PROTECTED]', etc that I'd like to crack down on. I can identify messages that originate from outside our network easily enough, since all this goes through another server that stamps these messages. However, in order to setup inbound rules to block this, I'm looking at setting up either 40+ rules to block inbound messages from our domains, or 1 rule with 40+ arguments. Creating these rules and applying them isn't really a problem, but I'm worried that this might cause a lot of overhead on our server. On an average day we receive about 90K messages and send out about 20K. Can anyone tell me how Imail might handle large rulesets like this? Thanks, ::James Nelson 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/ 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/
