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iRedMail-0.5.1# bash iRedMail.sh
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i have the following messages

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< INFO > Checking necessary command/package: dialog/dialog ...
< INFO > Installing package(s): dialog
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-2.6.24-19-generic linux-headers-2.6.24-19
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed:
  dialog
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 258kB of archives.
After this operation, 1356kB of additional disk space will be used.
Err http://mirrors.163.com hardy/universe dialog 1.1-20071028-3
  Could not connect to mirrors.163.com:80 (60.191.81.189), connection timed out
Failed to fetch http://mirrors.163.com/ubuntu/pool/univ … 3_i386.deb  Could not connect to mirrors.163.com:80 (60.191.81.189), connection timed out
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
< ERROR > Installation failed, please check the terminal output.
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is the link is broken or i miss something else?
help me to solved this.
thank you