Comments on: Jump in ‘failed delivery’ spams http://www.p2pnet.net/story/15576 p2pnet.net - reader powered Wed, 01 Feb 2012 15:11:09 -0300 http://wordpress.org/?v=2.8.4 hourly 1 By: Andy http://www.p2pnet.net/story/15576/comment-page-1#comment-409395 Andy Fri, 11 Apr 2008 20:31:12 +0000 http://www.p2pnet.net/story/15576#comment-409395 I have this problem because I have my own domain, and choose to receive all mail for it. I notice that the spam for made-up addresses (the spammers pick something, and then if it doesn't fail at smtp time they think it's valid) can be very sporadic. Especially bounces! I filter on sender as "Mail Delivery System" or "postmaster@" or "Mailer-daemon@" and it catches most of them for automatic trash. The spammers take less effort to randomise the "from" address, so it varies more. For example, I had 28 such bounces on 2008-03-31, but the next day, 2008-04-01 I had 1,219. I believe that there are only a few REALLY BIG spam-bot-nets. Lots of computers, but few identities behind them. I have this problem because I have my own domain, and choose to receive all mail for it. I notice that the spam for made-up addresses (the
spammers pick something, and then if it doesn’t fail at smtp time they think it’s valid) can be very sporadic. Especially bounces! I filter on sender as “Mail Delivery System” or “postmaster@” or “Mailer-daemon@” and it catches most of them for automatic trash. The spammers take less effort to randomise the “from” address, so it varies more. For example, I had 28 such bounces on 2008-03-31, but the next day, 2008-04-01 I had 1,219.

I believe that there are only a few REALLY BIG spam-bot-nets. Lots of computers, but few identities behind them.

]]> By: Jon http://www.p2pnet.net/story/15576/comment-page-1#comment-408911 Jon Fri, 11 Apr 2008 17:06:26 +0000 http://www.p2pnet.net/story/15576#comment-408911 ^^ Thanks. Meanwhile, it's getting worse. Now penis pill spam and guaranteed authentic fake watches are in the minority ;) Cheers! ^^ Thanks.

Meanwhile, it’s getting worse. Now penis pill spam and guaranteed authentic fake watches are in the minority ;)

Cheers!

]]> By: cyberscan http://www.p2pnet.net/story/15576/comment-page-1#comment-408895 cyberscan Fri, 11 Apr 2008 16:57:41 +0000 http://www.p2pnet.net/story/15576#comment-408895 This is known as backscatter spam. There are two possibilities: 1) A spammer who is frustrated at you is using your email address in the from part of spams he or she sends out or 2) a spammer is taking advantage of email servers' tendency to send back an error message when a message does not go through. This allows the spam to carry the statuse of email server messages and therefore are usually allowed through antispam filters. This is known as backscatter spam. There are two possibilities:

1) A spammer who is frustrated at you is using your email address in the from part of spams he or she sends out or

2) a spammer is taking advantage of email servers’ tendency to send back an error message when a message does not go through. This allows the spam to carry the statuse of email server messages and therefore are usually allowed through antispam filters.

]]> By: Reader's Write http://www.p2pnet.net/story/15576/comment-page-1#comment-408790 Reader's Write Fri, 11 Apr 2008 16:13:11 +0000 http://www.p2pnet.net/story/15576#comment-408790 It has happened to me as well. I think it just depends on what email address spammers decide to put in the from field that day. If my experience is any indication, things should go back to normal shortly. It has happened to me as well. I think it just depends on what email address spammers decide to put in the from field that day. If my experience is any indication, things should go back to normal shortly.

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