----- Original Message ----- From: "Micheal Patterson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, September 12, 2003 7:58 AM Subject: Sendmail Spam Block question.
> I'm getting numerous spam messages that are coming in with headers such as: > > <snip> > Received: from 67.66.xxx.x. ([220.201.80.37]) > > Where 67.66.xxx.x is the actual Ip of my sendmail server and the actual > sending host is 220.201.80.37. Is there any way to block this type of spam > other than blocking 220.201.80.37? I can't place the ip in the access list > as it kills outbound mail from that system. > > Thanks. > > -- > > Micheal Patterson > Network Administration > Cancer Care Network > 405-917-0600 > I realize that I'm responding to my own initial message, but after reading it again, let me clarify. The source of the spam is 220.201.80.37, it's spoofing the hostname portion as 67.66.xxx.x which is the IP of my mx. Is there any way to configure Sendmail that, in this example, if it recieves connection that has the hostname field of 67.66.xxx.x. and it doesn't resolve back to the ip 220.201.80.37, to reject the message? -- Micheal Patterson TSG Network Administration 405-917-0600 Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
