>the SMTP server will examine whether the sender using > > [EMAIL PROTECTED] is valid or not.
There is no way to determine definitively, and certainly not quickly while the receiving mail server is in mid-SMTP-session, whether [EMAIL PROTECTED] exists or not. IMGate uses forward and reverse DNS zones to reduce forgeries of frequently forged domains (@yahoo.com, @aol.com, @hotmail.com, and 4000+ others). IMGate also uses the above technique to reduce almost to nothing forgeries of the @sender.domain when your mail domains are the ones forged. IMGate "advanced" will use the above rejects of @sender.domains to let ip's convict themselves into blacklist jail for going above a threshold of rejected forgeries. After conviction, the forging ip will be blacklisted AS AN IP, no matter what it uses for any other headers or envelope values. very precise and definitive. Len 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/
