Powershell to determine active mailbox on Exchange Server 2010

People,

How can we determine the number of active user in the mailbox server using Powershell ?
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Senior IT System EngineerIT ProfessionalAsked:
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FOXActive Directory/Exchange EngineerCommented:
Not certain if there is an actual command to output active mailboxes but this link can get you closer to your goal.

https://exchangeserverpro.com/counting-exchange-server-2010-mailboxes-powershell/
Senior IT System EngineerIT ProfessionalAuthor Commented:
@Fox,

I've done it already using the Powershell script below:

Get-MailboxServer | Get-Mailbox -ResultSize Unlimited | Measure-Object

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But how to know if the mailbox is still in use or not ?
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Greg BessoIT Solutions EngineerCommented:
You should try the Get-MailboxStatistics -Identity 'username' | fl * to check out the LastLogonTime and LastLogoffTime attributes that it returns.
Vaseem MohammedCommented:
check if this works
Get-Mailbox –Resultsize Unlimited | Get-MailboxStatistics | Sort LastLogonTime | select Displayname, lastlogontime

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you can export to .csv
Get-Mailbox –Resultsize Unlimited | Get-MailboxStatistics | Sort LastLogonTime | select Displayname, lastlogontime | Export-CSV -Path d:\Mailbox-Logon-Report.csv -NoTypeInformation

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Add additional properties to select statement as required.

Hope that helps.
Vaseem MohammedCommented:
You can also use "Date" comparison using (Get-Date).adddate(-30) and the LogonTime value to check users who has logged in last 30 days from the current date.
Senior IT System EngineerIT ProfessionalAuthor Commented:
@Vaseem,

Yes please, how to include that date older than 90 days into the script that you've suggested ?
Vaseem MohammedCommented:
Use a variable to store the value of (get-date).adddays(-90)
Compare the result in the variable to the value in lastlogontime
Logic would be, if lastlogontime is greater than value in variable then collect those user details else discard.
I can't give you a working script as am on vacation ;-)
Senior IT System EngineerIT ProfessionalAuthor Commented:
Thanks Vaseem,

let us know when you back from the vacation :-)
Vaseem MohammedCommented:
Hi,
This will give you the results you are looking for.
Get-Mailbox –Resultsize unlimited -RecipientTypeDetails UserMailbox | Get-MailboxStatistics | where {$_.lastlogontime -ge ((get-date).AddDays(-90))} | Sort LastLogonTime | select Displayname, lastlogontime | Export-CSV -Path d:\Active-Mailbox-Logon-Report.csv -NoTypeInformation

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