The IronPort email security appliance cannot use certificates with wildcards when verifying a certificate.

If you want to verify success or failure on TLS connections from the IronPort point of view, you can use the knowledgebase article below to search for those connections.

How can I determine if my IronPort is using TLS for delivery or receiving?

http://tinyurl.com/py4tw

Hi everyone,

I'm planning to enable TLS on our email traffic, but was wondering if that will conflict with the wildcard certificate we currently have enabled on the server?

I couldn't find any information about smtp tls errors because of it on google, but was wondering if anyone has specific experience with it.