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Run this script on a dfsr-member to check status of all dfs replications. 

$RGroups = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query "SELECT * FROM DfsrReplicationGroupConfig"
$ComputerName=$env:ComputerName
$Succ=0
$Warn=0
$Err=0

foreach ($Group in $RGroups)
{
$RGFoldersWMIQ = "SELECT * FROM DfsrReplicatedFolderConfig WHERE ReplicationGroupGUID='" + $Group.ReplicationGroupGUID + "'"
$RGFolders = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query  $RGFoldersWMIQ
$RGConnectionsWMIQ = "SELECT * FROM DfsrConnectionConfig WHERE ReplicationGroupGUID='"+ $Group.ReplicationGroupGUID + "'"
$RGConnections = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query  $RGConnectionsWMIQ
foreach ($Connection in $RGConnections)
{
$ConnectionName = $Connection.PartnerName.Trim()
if ($Connection.Enabled -eq $True)
{
if (((New-Object System.Net.NetworkInformation.ping).send("$ConnectionName")).Status -eq "Success")
{
foreach ($Folder in $RGFolders)
{
$RGName = $Group.ReplicationGroupName
$RFName = $Folder.ReplicatedFolderName

if ($Connection.Inbound -eq $True)
{
$SendingMember = $ConnectionName
$ReceivingMember = $ComputerName
$Direction="inbound"
}
else
{
$SendingMember = $ComputerName
$ReceivingMember = $ConnectionName
$Direction="outbound"
}

$BLCommand = "dfsrdiag Backlog /RGName:'" + $RGName + "' /RFName:'" + $RFName + "' /SendingMember:" + $SendingMember + " /ReceivingMember:" + $ReceivingMember
$Backlog = Invoke-Expression -Command $BLCommand

$BackLogFilecount = 0
foreach ($item in $Backlog)
{
if ($item -ilike "*Backlog File count*")
{
$BacklogFileCount = [int]$Item.Split(":")[1].Trim()
}
}

     if ($BacklogFileCount -eq 0)
{
$Color="white"
$Succ=$Succ+1
}
elseif ($BacklogFilecount -lt 10)
{
$Color="yellow"
$Warn=$Warn+1
}
else
{
$Color="red"
$Err=$Err+1
}
Write-Host "$BacklogFileCount files in backlog $SendingMember->$ReceivingMember for $RGName" -fore $Color

} # Closing iterate through all folders
} # Closing  If replies to ping
} # Closing  If Connection enabled
} # Closing iteration through all connections
} # Closing iteration through all groups
Write-Host "$Succ successful, $Warn warnings and $Err errors from $($Succ+$Warn+$Err) replications."