experimental backup shell script

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
install exim4 for mta

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Merge pull request #11 from osmfj/add_mta

Add Dependency : MTA
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fix #8

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Merge pull request #12 from osmfj/disable_verification_email_notify

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