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We're an ISP and a client of ours without an IT staff has asked us to help cleanup their Kerio mail server (6.0.4, running on CentOS). It appears that some accounts have been brute-forced and they are being used as a spam relay on a fairly large scale. We're also looking to use this opportunity to evaluate Kerio as an option for our business clients that need something other than our own email hosting or Exchange.

I'm extremely well-versed with email in general, but not Kerio, and I'm having a hard time getting it to show me the information I need.

My first problem is the client required for administration (it appears this is the only way to adminster the server). In the "Logs" section, any log I select appears with totally garbled fonts (see attachment). If I select a line with the mouse, it's readable, but that's not totally practical due to the volume of logs involved.

I also see that there's an option to view the contents of the queue, but the client seems unable to handle the volume of messages in the queue. It starts using 100% CPU and remains unresponsive, even after letting it sit for over an hour.

Assuming I can somehow fix the log display, is there an easy way to simply get an overview of the following?

-All smtp-auth logins over a date range
-All user accounts that have logged in over the last X days (I found this for individual accounts, but did not find a way to get a summary of all users in all domains)
-Contents of the queue, sorted by sender or destination

And lastly, can I trust the contents of the .env files in the queue? The headers in these files do indicate that the spam was sent from an authenticated user, can I trust that this was not forged by the sender? An example:

  <auth-sender>tina<_at_>  </auth-sender> <<-- THIS LINE

I understand this is an old version, but no one is committed to an upgrade at this point. We want to evaluate the product we have first and then determine what the latest version offers beyond what they currently run.


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I would suggest reading the logs in your text editor of choice. The location should be something like this: /opt/kerio/mailserver/store/logs. However, I'm not sure all of the information you're looking for is recorded by default. Also, you're probably better off parsing (and emptying) the queue manually from the command line again with your tools of choice.

[Updated on: Mon, 25 April 2011 21:44]


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I'm digging around the manual now to see if there's any good info to be had there. Also my subject line is incorrect, it's 6.4.0, not 6.0.4...

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Did anyone ever create a program, or web page, or something that would parse these log files, and stick them in a SQL database?

I just wish the log file delimiters were the same for all of the log files.

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Analysing log files is just as hard when the info is in a database. Kerio logs (almost) everything, but only you know if the log info is normal everyday activity or not. Use simple tools and know your trade.
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