Tag: MFCMAPI

Assume the following scenario:

• A user receives an e-mail message encrypted with Secure/Multipurpose Internet Mail Extensions (S/MIME).
• The message cannot be opened.
• When opening the message, the following error message is displayed:

Leider besteht ein Problem beim Öffnen dieses Elements. Dies kann vorübergehend sein. Wenn dieser Fehler erneut auftritt, sollten Sie Outlook neu starten. Fehler im zugrunde liegenden Sicherheitssystem. Interner Fehler.

Continue reading "Microsoft Outlook: Emails encrypted with S/MIME cannot be opened. The error message "Internal error." appears."

For troubleshooting e-mail messages encrypted using Secure/Multipurpose Internet Mail Extensions (S/MIME), the encrypted part of a message can be exported. See article "Microsoft Outlook: Extracting an encrypted S/MIME message from an email ".

To find out with which certificates a message has been encrypted, you can proceed as follows...

Continue reading "Microsoft Outlook: Find out recipient certificates for S/MIME encrypted mails"

The encrypted part of an e-mail message encrypted with Secure/Multipurpose Internet Mail Extensions (S/MIME) is always contained in a file called "smime.p7m" as an attachment to the mail.

Outlook does not display this attachment, but for analysis purposes it can be extracted from the e-mail with MFCMAPI , which Microsoft provides free of charge.

Continue reading "Microsoft Outlook: Extracting an encrypted S/MIME message from an email"

Below is a description of where it is possible to view which symmetric algorithm was used to encrypt an email received, and which hash algorithm was used for a signed email.

Continue reading "Microsoft Outlook: View which algorithm was used for an S/MIME encrypted or signed email"