# Fix-MailboxGUID
# - Searches für Usermailboxes without a Mailbox GUID and generates one
#
# Version 1.2 19 Sep 2008
#	FIX: Vergleich 
#	-ResultSize 10000
# Version 1.1 8 Sep 2008
#	added unattened Mode and eventlogging
# Version 1.0 8 Sep 2008
#	first version

#[bool]$unattend = $false # unattened Mode OFF
[bool]$unattend = $false # unattened Mode ON

write-host "Fix-MailboxGUID: Preparing environment"
# Initialize Eventlog für reporting and Debugging
$evt=new-object System.Diagnostics.EventLog("Application")
$evt.Source="MSXFAQ.FixMailboxGUID"
$infoevent=[System.Diagnostics.EventLogEntryType]::Information
$warnevent=[System.Diagnostics.EventLogEntryType]::Warning
$errorevent=[System.Diagnostics.EventLogEntryType]::Error
$evt.WriteEntry("FixMailboxGUID started",$infoevent,0)

$wshshell = new-object -comobject wscript.shell

write-host "Fix-MailboxGUID: ---------- Loading Recipients"
$recipients = Get-Recipient -RecipientType Usermailbox -ResultSize 10000
write-host "Fix-MailboxGUID: ---------- Processing Recipients"
$recipients | foreach {
	$distinguishedname = $_.distinguishedname
	write-host "  checking: $distinguishedname"
	$adsobject = [adsi]"LDAP://$distinguishedname" ;
	$ErrorActionPreference = "SilentlyContinue";  # hide errors
	$mailboxguid = "";                   # Initialize variable
	$mailboxguid = $adsobject.get("msExchMailboxGuid");
	$ErrorActionPreference = "Continue";
	if ($mailboxguid.tostring() -eq ""){
		write-host -BackgroundColor red "  FIX Required !";
		
		if ($unattend -or ($wshshell.popup("Update MailboxGuid at $distinguishedname ?",0,"Fix-MailboxGUID",4) -eq 6)) {
			$GUID = [guid]::NewGuid();  	# generate GUID 
			$adsobject.put("msExchMailboxGuid",$GUID.tobytearray());
			$adsobject.setinfo();
			write-host -backgroundcolor green `
						-foregroundcolor black `
						"  Fixed GUID="$GUID.tostring();
			$evt.WriteEntry("Fixed:$distinguishedname with $GUID" ,$infoevent,10)
		}
		else {
			write-host -backgroundcolor yellow `
						-foregroundcolor black `
						"  SKIP GUID "$GUID.tostring();
			$evt.WriteEntry("Skipped:$distinguishedname",$warnevent,11)
		}
	}
}
$evt.WriteEntry("FixMailboxGUID finished",$infoevent,1)