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Re: [cobalt-users] Is this some kind of Denial Of Service Attack
- Subject: Re: [cobalt-users] Is this some kind of Denial Of Service Attack
- From: "Dave Thurman (Mailing List Email)" <listonly@xxxxxxxxxxxxxxxxxxxx>
- Date: Tue Oct 22 07:38:50 2002
- List-id: Mailing list for users to share thoughts on Sun Cobalt products. <cobalt-users.list.cobalt.com>
on 10/22/02 8:28 AM, aljuhani stated:
> Oct 21 05:08:18 ns sendmail[5350]: g9L96wQ05350: SYSERR: putoutmsg
> (node-c-8235.a2000.nl): error on output channel sending "550 5.7.1
> <devp94g@xxxxxxxxxx>... Relaying denied. Please check your mail first.":
> Broken pipe.
We get a ton of these every now and then reported by Logcheck. We had a
china.com address hitting us with over 200 in 15 minutes. If they are
extremely annoying you can block them in the gui or do the hosts.deny file.
I have been back tracking them and if it is a C, B or A class from some
place like Korea or china, I block the whole class with what ever process
they are hitting, SENDMAIL: (IP BLOCK) or if I am feeling really p*ssed I
just do ALL: (IP BLOCK)
--
Thanks!!
Dave Thurman
The Web Presence Group / www.webpresencegroup.net
Listonly <at> webpresencegroup.net / Spam Block 8^Q