First of all big thanks for this software. It really eases up the implementation of a web- and emailserver. Following another thread on this forum, I was able to create new self signed certificates for courier-imap and courier-pop. I then configured my clients to use IMAP over SSL, port 993 and to use SMTP with TLS, port 25. If I connect with Thunderbird, I can install the certificate and never be bothered with it again. If I connect with Outlook however, I never get this option to install the certificate. And everytime I receive this dialog box, asking whether I want to continue using this server because of an untrusted certificate. Simplest solution would be to migrate to Thunderbird. But my users are very accustomed to Outlook. In other words, is there a way to install the certificates in Outlook? Big thanks in advance.