|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Weird distributed spam attack
Unless, I missed the posts about this,.. I just (and still am experiencing) a distributed spam attack. I have a small machine at a colo. Today I check my inbox and there are 2000+ extra messages to a domain I have 'zbot.net'. The messages are doing 4 letter combinations for the recipient. (abde, abdf, etc.) The from's are all [email protected] I check my qmail queue -> its at 13405 messages. I shut down mail and remove the email from the queue. Here is the kicker. I check where these are coming from, they are from all over the place. I check for IP address spoofing... not happening. No IP options or TCP options. This came from like about 300 different networks, and yes I don't accept source routing (IP Options). Anyways, it happened to my machine, I stopped accepting mail to that domain from qmail-smtpd, so I'm back to normal. If anyone want's a tcpdump of the connection attempts or the emails. Let me know. Dru Nelson San Carlos, California
|