OFTP Mailbox Security: TCP Tab

Use the TCP tab to specify an optional client certificate. This certificate is not applicable to ISDN connections and only needs to be specified for those servers that require a client certificate be specified.
Certificate Alias
The certificate to use for TLS over secure TCP/IP. This certificate is optional. 
Specify a value or click Browse to navigate to the file you want to select.
Password
The password for the certificate you specify.
Exchange Certificates
Displays the Certificate Exchange dialog box, which allows you to send your user and SSL certificates to your trading partner. See Exchanging certificates with your trading partner.