Auto-delete items older than x days for single user mailbox in Exchange 2010

We have a mailbox for which we would like to set up a rule that continually deletes all email older than 7 days. I have come across various powershell commands which show how to do this as a once off, but we need this to run automatically everyday.

As the mailbox is unattended we cannot use Outlook rules and OWA does not offer the required granularity.

What therefore would be the best way of implementing this?


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Chris MillardCommented:
You need to create a retention policy tag followed by a retention policy which you can then assign to the user(s) concerned.

I did this just last week (except that mine deletes after 30 days) following this article:-

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MASEE Solution Guide - Technical Dept HeadCommented:
You can run using Windows Schedule tasks.
1. Save your command as PS1 file (powershell file). Save it as .ps1

2. Create a batch file by copying the below command and modify where you put your powershell file. Save as .bat

powershell -command "&{C:\Temp\Monitoring\test-exchangeServerHealth.ps1}"

3. Create a windows schedule task to run the batch file every 2 hours

Here is the reference

create a retention policy and tag this user
Will SzymkowskiSenior Solution ArchitectCommented:
As stated you can use Retension Tags for a individual mailbox or you can use Search-Mailbox using the -deletecontent switch. Below is the syntax for the search-mailbox script.

Script is below...
Provide the account with Import-Export Management Role
New-ManagementRoleAssignment -Role "Mailbox Import Export" -User Administrator

Open in new window

Script to deleted the mailbox content
$date = get-date
Search-Mailbox -Identity mailbox1 -StartDate $date.AddDays(-7) -EndDate $date.AddDays(-365) -deletecontent

Open in new window

You would then run this from a scheduled task for how often you want this to perform the remove of the mail items.

Because you are only looking to do this for everything older than 7 days you should only have to run this once a day.

Murali ReddyExchange ExpertCommented:
I'd suggest retention policy would be the best and easiest approach.
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