The company I work for has been bought by another and we are currently transitioning our IT systems. As part of this transition the users are being given mailboxes in the new organisation. Until the decommisioning of existing systems is complete some users have a need to access their original mailbox and public folders which they are achieving via Outlook Web Access.
The users working with public folders via OWA found that they could not reply or forward messages exceeding 2MB in size. A Google search returned this article which provided the solution.
On each front-end server the following registry entry needs to be created:
Value Data: X
Where X is the maximum size you want to set in kilobytes (remembering to set the base to decimal).
[tags]Exchange 2003, OWA, Outlook Web Access[/tags]