Stops sending and receiving mail

[Whitnall, Dale (North)]

Hi all,
I have a Kolba3 install working on a centos 6.4 virtual machine,
For whatever reason after 4 days of up time it stops sending and receiving mail, I have tried looking in the logs but nothing stands out.
A reset gets it all going again.
I have noticed the following in the logs and thought it would be a good start to solve these first though.

2013-05-25 09:14:01,933 pykolab.conf WARNING Option does not exist in defaults.
2013-05-25 09:14:01,954 pykolab.plugins.dynamicquota ERROR Quota 'default_quota' not an integer!
2013-05-25 09:14:01,954 pykolab.plugins.dynamicquota ERROR Quota 'default_quota' not an integer!
2013-05-25 09:15:02,532 pykolab.conf WARNING Option imap/virtual_domains does not exist in config file /etc/kolab/kolab.conf, pulling from defaults
2013-05-25 09:18:21,302 pykolab.conf WARNING Option ldap/modifytimestamp_format does not exist in config file /etc/kolab/kolab.
May 25 09:27:15 talax imaps[3551]: unable to open Berkeley db /etc/sasldb2: No such file or directory
May 25 09:24:53 talax imap[3398]: unable to open Berkeley db /etc/sasldb2: No such file or directory

I don't know if any of the above is anything to worry about but I can't seem to find any information if its good or bad.

Thanks
Dale


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