Script to Fix IMCEAEX #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

Useage Examples:
#copy and paste the entire NDR to a File
#To convert to x500 from csv : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt
#To make changes to user Account : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt -edit True
#To Verify the Changes to Account : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt -CheckX500 True

#Author: Sunil Chauhan
#EMail: Sunilkms@gmail.com
#Blog: sunil-chauhan.blogspot.com
#Fix Recipient for whome you are getting IMCEAEX user not found NDR.
# Useage Examples:
# copy and paste the entire NDR to a File
#To convert to x500 from csv : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt
#To make changes to user Account : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt -edit True
#To Verify the Changes to Account : .\Fix-IMCEAEX-From-NDR.ps1 -NDRFile File.txt -CheckX500 True
#

#"Note: This script useses ACtiveDirectory powershell Module please make sure the same in install"

param ($edit,$CheckX500,$NdrFile)

$m=(Get-Module | ? {$_.Name -like "Activedirectory"})
if (!$m) {"Connecting AD"; Import-Module ACtiveDirectory} else {"Already Connnected AD Skip.."}

$ndr = get-content $NDRFile
$in = 0 ; foreach ($line in $ndr) { if ($line -match "Received:") {Break} else {$in++}}
$ndr = $ndr | select -Index (0..$in)
$inn = 0 ; foreach ($line in $ndr) { if ($line -match "admini") {Break} else {$inn++}}
$NameHeader= $ndr | select -Index (0..$inn)
$user=@();$n=0 ; foreach ($l in $NameHeader) {$n++ ; if ($NameHeader[$n] -match "helpdesk.") {$user+=$NameHeader[$n - 1]}}
$IMC = $ndr | ? {$_ -match "IMC"}

$file=@()
$c=0
if ($user.count -le 1)
 {
 $newEntry = New-Object -TypeName PSObject
 $newEntry | Add-Member -MemberType NoteProperty -Name DisplayName -Value $user[0]
 $newEntry | Add-Member -MemberType NoteProperty -Name IMC -Value $IMC
 $file+=$newEntry
 }
 else {
 foreach ($u in $user)
 {
 $newEntry = New-Object -TypeName PSObject
 $newEntry | Add-Member -MemberType NoteProperty -Name DisplayName -Value $u
 $newEntry | Add-Member -MemberType NoteProperty -Name IMC -Value $IMC[$c]
 $file+=$newEntry
 $c++
 }

 }

if ($file.count -gt 2) {$file | ft -AutoSize } else {$file | fl}

Function CleanLegacyExchangeDN ([string]$imceaex)

 {
 $imceaex = $imceaex.Replace("IMCEAEX-","")
 $imceaex = $imceaex.Replace("_","/")
 $imceaex = $imceaex.Replace("+5F","_")
 $imceaex = $imceaex.Replace("+20"," ")
 $imceaex = $imceaex.Replace("+28","(")
 $imceaex = $imceaex.Replace("+29",")")
 $imceaex = $imceaex.Replace("+2E",".")
 $imceaex = $imceaex.Replace("+2C",",")
 $imceaex = $imceaex.Replace("+21","!")
 $imceaex = $imceaex.Replace("+2B","+")
 $imceaex = $imceaex.Replace("+3D","=")
 $regex = New-Object System.Text.RegularExpressions.Regex('@.*')
 $imceaex = $regex.Replace($imceaex,"")
 $imceaex # return object
 }

function AddX500
 {
 param (
 $user,
 $X500
 )
 Set-ADUser $user -Add @{proxyAddresses=$X500}
 }

$data=@()
foreach ($entry in $file)
 {
 try {
 $us = Get-Recipient $Entry.DisplayName.replace("'","" ) -ErrorAction Stop
 if ($us.count -gt 1)
 {
 write-host "Multiple Recipient found for user:" -n -f yellow
 write-host $Entry.DisplayName -f cyan -n
 write-host " Match SMTP from NDR" -f yellow
 Add-content -value $Entry.Displayname -path "log.txt"
 Add-content -value $(CleanLegacyExchangeDN $Entry.imc) -path "log.txt"
 $usr =$us[0].PrimarySmtpAddress.toString()
 }
 else {
 $usr =$us.PrimarySmtpAddress.toString()
 }

 $newEntry = New-Object -TypeName PSObject
 $newEntry | Add-Member -MemberType NoteProperty -Name user -Value $usr
 $newEntry | Add-Member -MemberType NoteProperty -Name X500 -Value $("X500:" + $(CleanLegacyExchangeDN $entry.IMC))
 $data += $newEntry
 }
 catch{
 if ($error[0].exception -match "null-valued")
 {
 write-host "Could'nt Catch Display Name From NDR." -f Red
 Write-host "Error Exception:" $error[0].Exception.Message
 ""
 }
 else {
 write-host "Recipient Not Found or not in Correct Format" -f yellow -n
 ""
 }
 Add-content -value $error[0].Exception -path "log.txt"
 }

 }

if ($data.count -gt 2) {$data | ft -AutoSize }else {$data | fl}

function getcuX500
 {
 param ($id)
 (Get-Recipient $id).EmailAddresses | ? {$_.Prefix -match "X500"} | % {$_.ProxyAddressString}
 }

# Add X500 proxy address on user account

if ($edit)
 {
 foreach ($u in $data)
 {
 write-host "checking if X500 Already Exist " -f cyan
 $currentX500 = getcuX500 -id $u.User
 if ($currentX500 -like $u.x500)
 {
 Write-Host "X500 Already Exist for:"$u.User -f green
 }
 else{
 Write-host "Fixing:" $u.User
 Write-host "X500Add:" $u.X500
 Addx500 -user ((Get-Recipient $u.user).SamAccountName) -X500 $u.X500
 }
 }
 }

# Check X500 currently availble on user Acccount

if ($checkX500)
 {
 foreach ($u in $data)
 {
 ""
 write-host "Below are the currently Stampled X500 for:"$u.User -f Yellow
 $x=(Get-Recipient $u.User).EmailAddresses | ? {$_.Prefix -match "X500"} | % {$_.ProxyAddressString}
 if ($x -eq $null)
 {
 Write-Host "No X500 Address found in Recipient ProxyAddresses List"-f cyan
 }
 else {$x}
 }
 }