$servers = Get-Content C:\servers.txt
foreach($server in $servers)
{
    
    if( Get-Service -ComputerName $server -Name "Sophos Message Router" -ErrorAction SilentlyContinue)
    {
        sc.exe \\$server stop "Sophos Message Router" | Out-Null
        sleep 5
        sc.exe \\$server start "Sophos Message Router" | Out-Null
    }
}