Difference between revisions of "Trusted Email Services"

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(Mail Relay)
(Mail Relay)
Line 72: Line 72:
  
 
<hsl type="rcpt">
 
<hsl type="rcpt">
if (tes_is_member($senderdomain, function() {
+
if (tes_is_member($senderdomain, function($error) {
 
     Defer("TES lookup failed");
 
     Defer("TES lookup failed");
 
     }))
 
     }))

Revision as of 15:21, 14 March 2016

function tes_check_client_policy()
{
    global 
$saslauthed$tlsstarted$tlsprotocol;
    if (!
$tlsstarted)
        return 
false;
    if (
$tlsprotocol == "SSLv2" or
        
$tlsprotocol == "SSLv3" or
        
$tlsprotocol == "TLSv1")
        return 
false;
    if (!
$saslauthed)
        return 
false;
    return 
true;
}
function 
tes_check_member_server_policy()
{
    global 
$tlsstarted$tlsprotocol$tlsciphers$tlskeysize;
    if (!
$tlsstarted)
        return 
false;
    if (
$tlsprotocol == "SSLv2" or
        
$tlsprotocol == "SSLv3" or
        
$tlsprotocol == "TLSv1" or
        
$tlsprotocol == "TLSv1.1")
        return 
false;
    return 
true;
}
function 
tes_is_member($domain$error)
{

Mail Submission

On client submission port (587) use the following script.

if (!tes_check_client_policy())
    
Reject("Client is not TES compliant"); 

And the following configuration:

  • Listener setting
    • A TLS certificate
    • A auth flow
    • Require TLS for AUTH

DKIMSign($selector$senderdomain$rsakey); 

if (tes_is_member($recipientdomain))
{
    
SetTLS([
        
"tls_protocols" => "!SSLv2,!SSLv3,!TLSv1,!TLSv1.1",
        
"tls" => "dane_require"
    
]);
}
else
{
    
SetTLS([
        
"tls" => "dane"
    
]);

Mail Relay

Use the following script.

if (tes_is_member($senderdomain, function($error) {
     
Defer("TES lookup failed");
    }))
{
    if (!
tes_check_member_server_policy())
        
Reject("Member is not TES compliant");

if (is_tes_member($senderdomain, function() {
     
Defer("TES lookup failed");
    }))
{
    
$result DKIMSDID([$senderdomain]);
    if (
$result[$senderdomain] != "pass")
        
Reject("The messages is not DKIM signed policy of $senderdomain ($messageid)");

    
$result ScanDMARC();
    if (
is_array($result) && $result[$senderdomain] == "reject")
        
Reject("The messages violates the DMARC policy of $senderdomain ($messageid)");

    
AddHeader("X-TES-Status""member");
}
else
{
    
AddHeader("X-TES-Status""non-member");