Running powershell script through a list of servers - powershell

Question

I have a powershell script that outputs iis app pools running on a server along with the dotnet version, username and password running the account. How can i get this working for a list of servers where i can point it to a list of 100 servers on a text file..say servers.txt. Below is the code..
try{
Import-Module WebAdministration
$webapps = Get-WebApplication
$list = #()
foreach ($webapp in get-childitem IIS:\AppPools\)
{
$name = "IIS:\AppPools\" + $webapp.name
$item = #{}
$item.WebAppName = $webapp.name
$item.Version = (Get-ItemProperty $name managedRuntimeVersion).Value
$item.State = (Get-WebAppPoolState -Name $webapp.name).Value
$item.UserIdentityType = $webapp.processModel.identityType
$item.Username = $webapp.processModel.userName
$item.Password = $webapp.processModel.password
$obj = New-Object PSObject -Property $item
$list += $obj
}
$list | Format-Table -a -Property "WebAppName", "Version", "State", "UserIdentityType", "Username", "Password" | out-file MyDCs.csv
}catch
{
$ExceptionMessage = "Error in Line: " + $_.Exception.Line + ". " + $_.Exception.GetType().FullName + ": " + $_.Exception.Message + " Stacktrace: " + $_.Exception.StackTrace
$ExceptionMessage
}