AddUserPermissionToShareMailboxByGroup.ps1

#予め Connect-EXOPSSession で接続しておく

function AddUserPermissionToShareMailboxByGroup([string]$shareMailbox, [string]$group)
{
    Write-Host "Get-DisributionGroup"
    Write-Host "group is $group"
    $members = Get-DistributionGroupMemberRecursivery $group

    foreach($member in $members)
    {
        Add-MailboxPermission -Identity $shareMailbox -User $member -AccessRights FullAccess -InheritanceType All
    }
}

function Get-DistributionGroupMemberRecursivery([string]$group)
{
    Write-Host "IN Get-DistributionGroupMemberRecursivery"
    Write-Host "group is $group"
    $members = get-distributiongroupmember $group
    Write-Host "got members"

    $flatmembers = @()
    foreach($member in $members)
    {
        if($member.RecipientType -eq "UserMailbox")
        {
            Write-Host "add $member to flatmembers"
            $flatmembers += $member.PrimarySmtpAddress
        } elseif ($member.RecipientType -eq "MailUniversalSecurityGroup")
        {
            $flatmembers += Get-DistributionGroupMemberRecursivery $member
        } else {
        }
    }

    return $flatmembers
}