Enforced TLS for a External domains, but the mails are not hitting to the destination server??

[bsrinu001]

Hi Team,

We, have TLS enabled for the recipient/External domain but the mails are not getting deliver ??

Error is as below :

Message 445708356 to xyz@netins.net bounced by destination server. Reason: 5.4.7 - Delivery expired (message too old) ('000', ['TLS Unavailable']) [('from', 'ABC@rcis.com>')] 

From the Error it self we could see that delivery expired !!

why it showing TLS unavailable? when mails sent from Internal users? here domain  netins.com is external to us.

Please, suggest. Many Thanks 

[Libin Varghese]

The logs suggest that the email was bounced as TLS was unavailable on the destination server after the email could not be delivered within the configured bounce profile attempts.

It is recommended you set up domain debug logs and packet capture for the destination server IP to confirm cause for TLS failing.

TLS configuration on the ESA to be used at the time of delivery is configured under Mail Policies -> Destination Controls.

- Libin V