Install SSL Certificate on Courier IMAP Server

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Steps to Install SSL certificate on Courier IMAP Server

Courier is the most common mail server in the world due it being fast, secured, scalable and its ability to provide reliable email communication.

STEP 1: DOWNLOAD CERTIFICATE FILES

Once the validation process is completed, the Certificate Authority will send you the certificates files in a *.zip file, which will include the primary certificate, root certificate, and intermediate certificate files. Download that *.zip file and extract it to the server directory where you wish to store your SSL certificate files.

SSL certificate Installation on Courier IMAP Server

STEP 2: PEM FILE CREATION

Using any text editor of your choice, open the primary certificate file and the private key file. You’ll now want to create a new file, and copy over all the encrypted data of both the private key and the primary certificate, and save the new file as a .pem extension with the file ‘mycertificate.pem’.

Your mycertifiate.pem file will look something like this

Courier IMAP Server - MyCertifiate.pem file

*** Note: The private key file is the file you have created earlier during the CSR (Certificate Signing Request) generation process.***

In case your SSL Certificate requires an intermediate certificate file, open your intermediate certificate file included within the *.zip with any text editor and save it with a new file name as Intermediace_Cert.txt.

STEP 3: IMPORT AND INSTALL SSL CERTIFICATE

Secure Courier IMAP

  • Find and open the IMAPD-SSL file and add directives mentioned below
TLS_CERTFILE=/some/path/mycertificate.pem
TLS_TRUSTCERTS=/some/path/Intermediace_Cert.txt

Generally the location of IMAPD-SSL file is (/usr/lib/courier-imap/etc/).

  • Verify for the lines allow SSL3
TLS_PROTOCOL=SSL3

Secure POP3

  • Find and open the POP3D-SSL file and add directives mentioned below
TLS_CERTFILE=/some/path/mycertificate.pem
TLS_TRUSTCERTS=/some/path/Intermediace_Cert.txt

Generally the location of imapd-SSL file is (/usr/lib/courier-imap/etc/).

Now, Restart your Courier IMAP Server.

SSL Certificate is now Installed on Courier IMAP Server.

IMPORTANT RESOURCE:

1. Create CSR (Certificate Signing Request)
2. Courier IMAP SSL Support

Related Resources

*** Note: For illustration purpose, we took default name as mycertificate.pem & Intermediace_Cert.txt, you can take your own names. But make sure to change the directive based on your certificate file names. ***Courier is the most common mail server in the world due it being fast, secured, scalable and its ability to provide reliable email communication.

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This entry was posted in SSL Installation Guides by Mit Gajjar. Bookmark the permalink.

About Mit Gajjar

I have been working as SSL security expert for 6 years and i have assisted to plenty of users to solve their technical issues while installation of SSL certificates on their web servers. It’s really great experience working with Platinum Partner Company CheapSSLSecurity to offer the most reliable SSL certificate security solution on the internet. Being Platinum Partner Company of Symantec, GeoTrust Thawte, Comodo, and RapidSSL, CheapSSLSecurity offers the cheapest SSL certificates security on the internet which starts at just only $3.20/yr.