can't recive mail messages

[Mr. Surachai Sriaram]

hi all
i have problem on kolab2 server i can't revice mail messages from another 
user on my local domain and any another domain this is error messages

## error log ##
Jul 23 16:23:58 knhosp postfix/anvil[18746]: statistics: max connection 
count 1 for (smtp:65.54.246.233) at Jul 23 16:16:06
Jul 23 16:23:58 knhosp postfix/anvil[18746]: statistics: max cache size 2 at 
Jul 23 16:18:45
Jul 23 16:24:03 knhosp postfix/smtpd[18817]: connect from 
wx-out-0506.google.com[66.249.82.224]
Jul 23 16:24:04 knhosp postfix/smtpd[18817]: warning: connect to 
private/kolabpolicy: No such file or directory
Jul 23 16:24:05 knhosp postfix/smtpd[18817]: warning: connect to 
private/kolabpolicy: No such file or directory
Jul 23 16:24:05 knhosp postfix/smtpd[18817]: warning: problem talking to 
server private/kolabpolicy: No such file or directory
## end of error log ##

how can i fix this problem

please resolv me, thank advance
regard.

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