Outlook Express Database (DBX)

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Outlook Express (OE) uses the Outlook Express Database (DBX) database to store emails, folders, etc. The DBX was introduced in version 5. Earlier versions of OE use different file formats.

Contents

MIME types

File signature

OE5 DBX files start with hexadecimal: 0xcf 0xad 0x12 0xfe. For now it is assumed that this is the file signature. It is followed by a content class identifier (CLSID), which is unique for the type of DBX file.

File types

Although DBX probably contains a minor/major version (offset: 20 and 24) until now it is unknown how it affects the file type.

Contents

The contents of a DBX file is dependent on the content CLSID.

  • Message Database (CLSID: 6F74FDC5-E366-11d1-9A4E-00C04FA309D4)
  • Folder Database (CLSID: 6F74FDC6-E366-11d1-9A4E-00C04FA309D4)

Encryption

External Links