Thread: Attacks on MTA
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Old 29th September 2009, 17:00
dclardy dclardy is offline
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Join Date: Sep 2009
Location: Dallas, TX
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Default Attacks on MTA

How can I prevent these? I configured the Fail2Ban using Falko's tutorial. I figure it is only a matter of time until they get in.

Code:
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:39 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:40 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:41 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:42 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:43 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:44 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:44 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:44 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:44 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:45 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:46 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:46 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:46 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:46 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:46 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:47 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:47 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:47 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:47 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:48 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:48 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:48 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:48 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:49 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:49 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:49 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:49 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:51 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:51 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:51 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:51 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:53 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:54 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 27 21:58:54 server1 pop3d: Maximum connection limit reached for ::ffff:72.245.44.154
Sep 28 01:04:44 server1 pop3d: Maximum connection limit reached for ::ffff:81.82.241.67
Sep 28 01:04:45 server1 pop3d: Maximum connection limit reached for ::ffff:81.82.241.67
Sep 28 06:30:32 server1 postfix/smtpd[23691]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:30:44 server1 postfix/smtpd[23709]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:30:55 server1 postfix/smtpd[23711]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:31:07 server1 postfix/smtpd[23712]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:31:18 server1 postfix/smtpd[23719]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:31:30 server1 postfix/smtpd[23720]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:31:41 server1 postfix/smtpd[23721]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:31:53 server1 postfix/smtpd[23722]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:32:04 server1 postfix/smtpd[23723]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:32:16 server1 postfix/smtpd[23730]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:32:28 server1 postfix/smtpd[23731]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:32:39 server1 postfix/smtpd[23732]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Sep 28 06:32:51 server1 postfix/smtpd[23733]: warning: unknown[203.85.114.102]: SASL LOGIN authentication failed: authentication failure
Any help would be appreciated. These are not being blocked by Fail2Ban.
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