Thanks for the info...I know that AOL, MSN, Hotmail , etc all check the reverse. Even smaller companies do as well. I think I would kill about 40% or more of my spam if I could reverse it.
Thanks! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of R. Scott Perry Sent: Friday, December 13, 2002 11:43 AM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] Question for anybody >Does anybody know if IMail can do reverse mail server lookups for all >incoming mail and then reject the mail that comes from a mail server that >does not have the correct PTR record? No, it can not. While our Declude JunkMail product can be set up to bounce E-mail from servers without a PTR record, we do not recommend it, since a large percentage of legitimate mailservers don't have a PTR record (many think they do; those that don't often don't seem to care; I've even heard of a government mailserver that doesn't have PTR record as a "security measure"!). In our experience, the lack of a PTR record does work well towards a weighting system, as mailservers without a PTR record are much more likely to send spam than those that do. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers. Declude Virus: Catches both viruses and vulnerabilities in E-mail, with no annual licensing fees. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] 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/
