Delphi ActiveX

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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var
success: Integer;
mailman: TChilkatMailMan;

begin
success := 0;

//  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 := TChilkatMailMan.Create(Self);

//  Configure the POP3 server connection.
mailman.MailHost := 'pop.example.com';
mailman.MailPort := 995;
mailman.PopSsl := 1;
mailman.PopUsername := 'user@example.com';
mailman.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 = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('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.