Exchange 2010: SMTP SSL/TLS Certificate RRS feed

  • Question

  • On a Exchange 2010 running on a SBS 2011 i have the following problem with a receive-connector:

    I have a receive-connector which has two network bindings ( and
    Now, if i connect to the receive-connector (Port 25) from my Linux machine with:

    openssl s_client -starttls smtp -crlf -connect host.domain.ch:25

    everything is fine. Shows me the correct SSL certificate of the domain as it should be.

    But, if i connect to port 587 instead the same way, it shows me a wrong certificate which not belongs to the domain.

    I don't find anything where i can configure which certificate it should take. It's the same hostname, the same receive-connector, just another port number. I have no idea why this happens.

    Can i configure that anywhere? How does it decides which certificate it takes?

    Thank you

    Monday, March 5, 2012 1:48 PM