Start/notes.ini Parameters/MIME_Strict_Content_ID

MIME_Strict_Content_ID

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Parameter: MIME_Strict_Content_ID
Short description: Enables strict Content-ID resolution for MIME inline images and prevents the display of incorrectly referenced attachments.

Profile

Parameter
MIME_Strict_Content_ID
Category
Mail / Router
Component
Server, Client
Available since
10.0
Supported versions
10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
0 = tolerant resolution (default), 1 = enforce strict mapping

Description

In HTML mails, inline images reference their attachments via cid: URIs. Domino resolves these by default fairly tolerantly, which in rare cases can lead to the wrong images being displayed – for example when multiple mails with identical Content-IDs are combined in a single MIME container. With MIME_Strict_Content_ID=1, the mapping is enforced strictly according to RFC 2045 / 2392.

Example configuration

MIME_Strict_Content_ID=1

Notes & pitfalls

  • Enabling can cause inline images in old / faulty mails to appear as generic attachments.
  • Do not enable without first testing critical newsletter / CRM mails.
  • Pairs with MIME_* and iNotes_WA_* parameters.
  • Affects server-side processing (router) as well as the client.
  • The change takes effect after a restart of the router / client.