If you have disabled open relaying then I would look at grey listing and throttling to reduce the number of spam per hour that comes in.
Since your routing others emails there is no point in spam analysis cause your customers are probably doing it already. Just need to dissuade spammers from full throttling your edge severs.
-Ross
On Jun 14, 2012, at 8:58 PM, Gustavo Lacoste gustavo@lacosox.org wrote:
The problem with my server is: I use it to offer webhosting services. Some customers using Outlook are blocked because they use black listed ips (ips simply are dynamic).
With Kind Regards,
Gustavo A. Lacoste Z. CuracautÃn - Chile Skype: knxroot Msn & Gtalk: knx.root [at] gmail.com Home page: http://www.lacosox.org
*Por favor, evite enviarme documentos adjuntos en formato Word o PowerPoint. Lea http://www.gnu.org/philosophy/no-word-attachments.es.html*
2012/6/14 John R Pierce pierce@hogranch.com
On 06/14/12 4:33 PM, Gustavo Lacoste wrote:
I need help for STOP this spamers right now.
Thanks in advance to anyone who can guide me
2 of the three relay IPs listed in your log fragment are listed on spamhaus' Zen combined list, http://www.spamhaus.org/zen/
this is free for use by low volume non-commercial email servers. see the terms linked on the above URL. adding the following line to your sendmail.mc file, then rebuilding the .cf and restarting sendmail would reject all mail connections from servers listed via Spamhaus.
FEATURE(dnsbl,`zen.spamhaus.org',`Message from $&{client_addr} rejected
(note this file is in M4 syntax, and has to use 'funny' quoting, with a ` as the opening quote).
-- john r pierce N 37, W 122 santa cruz ca mid-left coast
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