Oh wise man, I'm really tired to read your answers, I do not mean, to forge mail senders address. It is possible with Outlook Express. I mean to forge header Received: content.
"it creates whatever headers the spammers want" - first of all they must be RFC compliant, isn't it? I believe that it's possible to add any Received: lines but only from the machine where there software installed. If they use open relay with Imail for example, this relay add correct header, isn it? So, at least this data will be correct to identify spam? Right? What do you mean under "zombies"? As I understand either hacked or infected machines where they install their software to send spam. This is not an easy task for spammer. Much better to use any legal open relay. Regards, Dmitri Elgin, http://imailzip.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of R. Scott Perry Sent: Friday, August 06, 2004 5:29 PM To: [EMAIL PROTECTED] Subject: RE: [IMail Forum] Forwarding to AOL members - This is spam function function >You mean that someone can wittingly forge the header content? Yes, it is incredibly easy to do! You don't even need special software: just tell your mail client you are [EMAIL PROTECTED], and voila! you've forged the headers. >In principle, this is possible, but this is the real crime. I'm not >sure >that this the best way to send >spam. >Anyone knows something similar? Hello? Do you not receive any spam? I would say that at least 99% of the spam I see has forged headers. > Well, I assumed that it's possible, but it's not as easy to reproduce as > just to send spam throught an open relay. There must be deloyed > special email software on high speed leased line with dedicated ip. Almost all spammers have their own special software to send spam, and it creates whatever headers the spammers want. Open relays do not check for valid headers (after all, how can they know the headers are forged?). Spammers do not need a leased line or dedicated IP. If you were familiar with the anti-spam industry, you would know that most spammers now use zombies to send their spam. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection. Find out what you've been missing: Ask for a free 30-day evaluation. --- [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/
