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I'm getting the following error from my Ubuntu server:

exim paniclog /var/log/exim4/paniclog on (my server FQDN) has non-zero size, mail system might be broken.

I found a solution on the web here. Basically, I just need erase the paniclog by entering the following code:

sudo rm /var/log/exim4/paniclog

So, I know how to get rid of the error, but I don't know how it started, and how to not let it happen again. Any explanation? Thanks in advance.

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2  
Please post the contents of paniclog, to see the specific error that exim is generating, and then we can advise on how to keep the error from happening again. Exim is just doing its job and telling you that something unexpected happened :) –  roadmr Feb 17 '12 at 16:28
    
This question appears to be abandoned and unanswered, could you perhaps add more detail to your question? If this question no longer applies then you can either delete it or answer it yourself if you've solved the problem. Thanks! –  Kevin Bowen Mar 28 '13 at 10:56

2 Answers 2

This blog entry seems to have an answer. Looks like it can have to do with IPv6 settings and results from a change in the way the kernel supports IPv6.

http://blog.rebelit.net/?p=67

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  Kevin Bowen Mar 28 '13 at 10:54

I had the same issue, here is what my exim4 paniclog looked like:

$ sudo cat /var/log/exim4/paniclog

2014-02-01 21:36:51 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-01 22:03:33 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-01 22:33:19 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-01 22:36:33 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-01 23:03:51 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-01 23:14:31 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned
2014-02-02 11:09:48 socket bind() to port 25 for address 127.0.0.1 failed: Address already in use: daemon abandoned

This problem was apparently solved by deleting the paniclog file

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Nope. It is not solved by deleting that file. –  Olli Mar 2 at 16:29
    
What does an occupied address have to do with a log file? @willbeeler check what application uses port 25 –  the_Seppi Mar 2 at 16:32

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