Not able to send values in the Body of email

Hello, i have the following code

$SiteName = "ds-app.domain.co"
$SiteIP = "10.101.35.116"
$ResolveDNS = Resolve-DnsName ds-app.domain.com -DnsOnly
if (($ResolveDNS.Name -eq $SiteName) -And ($ResolveDNS.IPAddress -eq $SiteIP)) 	
	{ 
		Exit
        #Write-host "All is good"
	}
Else {
	$enablemail = @()
	$enablemail = "yes"
	$smtpServer = "SMTPServer.corp.lcl"
	$mailfrom = "ResolveDNS@domain.lcl"
	$mailto = "user@domain.com"
	$replyto = "sysadmins@domain.com"
	#$mailTo = "URGENT@domain.com"
	if ($enablemail -match "yes")
		{
			$msg = New-Object Net.Mail.MailMessage
			$smtp = New-Object Net.Mail.smtpClient($smtpServer)
			$msg.From = $mailfrom
			$msg.To.Add($mailto)
            $msg.ReplyTo = $replyto
			$msg.Subject = "Site: $SiteName Not Resolvable"
			$msg.Body = "Site: $SiteName Not Resolvable`nName: ($ResolveDNS).Name, TTL: ($ResolveDNS).TTL, IP Address: ($ResolveDNS).IPAddress"
			$smtp.Send($msg)
    }
}

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But when i get the email, the body looks like the following:

Site: ds-app.domain.co Not Resolvable
Name: (Microsoft.DnsClient.Commands.DnsRecord_A).Name, TTL: (Microsoft.DnsClient.Commands.DnsRecord_A).TTL, IP Address: (Microsoft.DnsClient.Commands.DnsRecord_A).IPAddress

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It should bring the values from $ResolveDNS in the body of the email. Thoughts...?

Thanks for your help,