Hello, All, I have a question that doesn't directly relate to Declude.JunkMail but it relates to how one of our outside correspondents is choosing to filter their spam. From the way that the Security Manager at the other company describes it seems that they are choosing to block e-mail based on what amounts to the equivalent of IPNOTINMX for Declude.JunkMail. I was wondering if anyone would be willing to give me their take on what he wrote. This explanation was receive by one of our sales staff (I have changed any personal information to protect the guilty)...
======================================== From: "John Doe" [mailto:[EMAIL PROTECTED] Sent: Friday, February 21, 2003 2:33 PM To: [EMAIL PROTECTED] Subject: Mail Delivery Failure The IP address you had attempted to send the mail from is: 67.39.75.119. The reverse address lookup for this IP address is: adsl-67-39-75-119.dsl.wotnoh.ameritech.net The MX record for nexustechgroup.com is listed as: mail.nexustechgroup.com. 1H IN A 199.218.9.36 Our SPAM filter on our exchange server does reverse address lookups on inbound sender domains to ensure that the mail is coming from an authorized SMTP server for the sending domain. This appears to be the problem in why the mail never made it in here. Hope this makes sense. John Doe, CISSP Security Practice Manager [EMAIL PROTECTED] ======================================== Am I correct that it sounds like they are blocking on the Declude.JunkMail equivalent of IPNOTINMX? I'm trying to understand the big picture of "best practices" in the SPAM filtering world? Thanks for your feedback! Dan Geiser <[EMAIL PROTECTED]> ==================================================================== This E-mail is scanned and free from viruses. www.nexustechgroup.com --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
