The most notorious for this is spamcop.net http://www.spamcop.net/fom-serve/cache/297.html "If a server sends bounces to an SCBL spamtrap in sufficient quantity to meet the listing criteria, the SCBL will list that server. This situation results as some mailservers do not reject mail during the SMTP transaction, but rather accept the mail and then send a bounce message later. (These servers usually run qmail or postfix). Viruses and spam often contain a forged From: line. If email is rejected or blocked during the SMTP transaction, the bounce will go to the connecting IP. If the bounce comes after the mail is accepted for delivery, then the bounce will go to the address in the From: field. Viruses and spam often use addresses from the list of recipients to populate the From: field. Sometimes, these addresses are spamtraps."
-e -----Original Message----- From: Claude Schneegans [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 07, 2006 2:09 PM To: CF-Talk Subject: Re: detecting delivered email addresses... >>It's too much of a resource hog to send all those bounces, Some will also think that bouncing invalid addresses helps spammers to clean up their database and make their scrap more efficient. This is probabilly true, but on the other hand, if you help them to eliminate invalid addresses, you lower the traffic of spam on your server. ..... if spamers ever bother clean up their scrap ;-/ >>not to mention some blacklists will now blacklist you for bouncing. Well, if they do this, they will blacklist hotmail and others, and they will get into trouble. I wonder how they justify blacklisting a server which sticks to the standard? This also means that the server will not bounce a message which is sent from a blacklisted address, otherwise it would blacklist itself? ;-) Then the blacklisted sender is not even been informed he is blacklisted neither by who? This is kind of weid ;-)) -- _______________________________________ REUSE CODE! Use custom tags; See http://www.contentbox.com/claude/customtags/tagstore.cfm (Please send any spam to this address: [EMAIL PROTECTED]) Thanks. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Message: http://www.houseoffusion.com/lists.cfm/link=i:4:231605 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
