CkPython

Add a PFX Source to MailMan for Decryption

Demonstrates the Chilkat MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the MailMan object's internal list of sources used for locating certificates and private keys — for example, to decrypt S/MIME email downloaded from the server. The second argument is the PFX password. This example configures a POP3 connection and registers a PFX source.

Background: When MailMan downloads an encrypted (S/MIME) message, it needs the recipient's private key to decrypt it. On Windows and macOS the OS certificate stores are searched automatically, but when the key lives in a standalone PFX file — common on Linux or in server deployments — AddPfxSourceFile tells MailMan where to find it. A PFX bundles the certificate and its private key in one password-protected file.

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import sys
import chilkat

success = False

#  Demonstrates the MailMan.AddPfxSourceFile method, which adds a PFX/PKCS#12 file to the
#  MailMan object's internal list of sources used for locating certificates and private
#  keys (for example, to decrypt downloaded S/MIME email).  The 2nd argument is the PFX
#  password.

mailman = chilkat.CkMailMan()

#  Configure the POP3 server connection.
mailman.put_MailHost("pop.example.com")
mailman.put_MailPort(995)
mailman.put_PopSsl(True)
mailman.put_PopUsername("user@example.com")
mailman.put_PopPassword("myPassword")

#  Provide a PFX so that encrypted emails downloaded from the server can be decrypted.

success = mailman.AddPfxSourceFile("qa_data/certs/decryption.pfx","pfx_password")
if (success == False):
    print(mailman.lastErrorText())
    sys.exit()

print("Added the PFX certificate/private-key source.")

#  Note: The path "qa_data/certs/decryption.pfx" is a relative local filesystem path,
#  relative to the current working directory of the running application.