Courier IMAP SSL Certificate Installation

Create a combined .pem certificate file:

Open a text editor and paste the contents of the primary certificate and the private key one after another in the following order:

1. The Primary Certificate (your_domain_name.crt)
2. The Private Key (your_domain_name.key)

Include the 'BEGIN' and 'END' tags on each. The result should look like this:

-----BEGIN CERTIFICATE----- 
(Your Primary SSL certificate: your_domain_name.crt) 
-----END CERTIFICATE----- 
-----BEGIN RSA PRIVATE KEY----- 
(Your Private Key: your_domain_name.key) 
-----END RSA PRIVATE KEY-----

Save the combined file as etugrasslcertificate.pem

Save the E-Tuğra Intermediate certificate:

Copy the E-Tuğra intermediate certificate (E-Tugra_root.crt) into a text editor and save it as a new file named e-tugra_root.txt.

Securing your Courier IMAP:

Locate and open imapd-ssl file (typically found in /usr/lib/courier-imap/etc/). Add the following directives and file locations:

• TLS_CERTFILE=/some/path/e-tugrasslcertificate.pem
• TLS_TRUSTCERTS=/some/path/etugra_root.txt

Please verify that line below line is allowing SSL3

• TLS_PROTOCOL=SSL3

Securing your POP3:

Locate and open pop3d-ssl file (typically found in /usr/lib/courier-imap/etc/). Add the following directives and file locations:

• TLS_CERTFILE=/some/path/e-tugracertificate.pem
• TLS_TRUSTCERTS=/some/path/e-tugra_root.txt

File permissions:

Make sure that the file permissions are set so that e-tugrasslcertificate.pem is readable by root only.

Restart the Courier IMAP server.