PS365

0.0.28

Public/Exchange/Mailbox/Set/Set-ExMailboxMaxSize.ps1

function Set-ExMailboxMaxSize {
    [CmdletBinding(SupportsShouldProcess)]
    param(
        [Parameter(Mandatory = $true, ParameterSetName = 'Identity')]
        [string[]]$Identity,

        [Parameter(Mandatory = $true, ParameterSetName = 'ByDomain')]
        [string]$ByDomain,

        [Parameter(Mandatory = $true, ParameterSetName = 'FromCSV')]
        [string]$FromCSV,

        [Parameter(Mandatory = $true, ParameterSetName = 'AllMailboxes')]
        [switch]$AllMailboxes,
        [Parameter(Mandatory = $false)]
        [switch]$GenerateCmdlets,

        [Parameter(Mandatory = $false)]
        [string]$OutputFile = "$(Get-Date -Format 'yyyy-MM-dd_HHmmss')-SetExMailboxMaxSize-Commands.ps1"
    )

    if ($PSCmdlet.ParameterSetName -eq 'ByDomain') {
        # we can't filter PrimarySmtpAddress with `-like '*domain'` so we first find mailboxes with emailaddresses matching the domain then filter primarySMTPAddress
        # https://michev.info/blog/post/2404/exchange-online-now-supports-the-like-operator-for-primarysmtpaddress-filtering-sort-of

        Write-Host -ForegroundColor Cyan "Searching mailboxes with PrimarySmtpAddress matching '*@$ByDomain'"
        $Mailboxes = Get-Mailbox -Filter "EmailAddresses -like '*@$ByDomain'" -ResultSize Unlimited | Where-Object { $_.PrimarySmtpAddress -like "*@$ByDomain" }
    }
    elseif ($PSCmdlet.ParameterSetName -eq 'AllMailboxes') {
        $Mailboxes = Get-Mailbox -ResultSize Unlimited
    }
    elseif ($PSCmdlet.ParameterSetName -eq 'FromCSV') {
        Write-Warning 'NotImplementedYet'
    }
    elseif ($PSCmdlet.ParameterSetName -eq 'Identity') {
        [System.Collections.Generic.List[PSCustomObject]]$Mailboxes = @()

        foreach ($id in $Identity) {
            try {
                $mbx = Get-Mailbox -Identity $id -ErrorAction Stop
                $Mailboxes.Add($mbx)
            }
            catch {
                Write-Warning "Mailbox not found: $id"
            }
        }
    }
    else {
        Write-Warning 'ParameterSetName Identity is not supported in this function.'
        return 1
    }

    $Commands = @()

    foreach ($mbx in $Mailboxes) {
        $cmdParams = @{
            Identity = $mbx.PrimarySmtpAddress
        }

        $cmdletString = 'Set-Mailbox -Identity'
        # param are -MaxReceiveSize 150MB -MaxSendSize 150MB -ErrorAction Stop
        $cmdParamstring = '-MaxReceiveSize 150MB -MaxSendSize 150MB -ErrorAction Stop'
        $fullCommand = "$cmdletString $($cmdParams.Identity) $cmdParamstring"
        if ($GenerateCmdlets) {
            $Commands += $fullCommand
        }

        if (-not $GenerateCmdlets -and $PSCmdlet.ShouldProcess($mbx.PrimarySmtpAddress, 'Set regional configuration')) {
            Write-Host -ForegroundColor Cyan "$($mbx.PrimarySmtpAddress) - Setting configuration..."
            try {
                Set-Mailbox -Identity $mbx.PrimarySmtpAddress -MaxReceiveSize 150MB -MaxSendSize 150MB -ErrorAction Stop
                Write-Host "$($mbx.PrimarySmtpAddress) - Configuration applied successfully." -ForegroundColor Green
            }
            catch {
                Write-Host "$($mbx.PrimarySmtpAddress) - $($_.Exception.Message)" -ForegroundColor Red
            }
        }
    }
    
    if ($GenerateCmdlets -and $Commands.Count -gt 0) {
        $Commands | Out-File -FilePath $OutputFile -Encoding UTF8
        Write-Host "Commands generated in file: $OutputFile" -ForegroundColor Cyan
    }
}