Exchange 2003 Removing Level 2 File type problems


SBS2003 SP2
Exchange 2003

I am using an exchange server 2003 built in sbs2003. Since a while i'm getting security warning when user try's to open attachement directly in outlook. First, i did add the reg key RemoveLevel1 (.tif, .pdf).
Then i went into to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesMSExchangeWebOWA to verify that no entry was there for PDF and TIF file type, there was none.

I'm a bit in the dark with that one.

thanks !
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James MontgomeryCommented:
There are no level 2 filetypes by default:

Are you looking in the right place - this key is on the users local machine, not the server.
DaveICCAuthor Commented:

level 2 file type are activated when level1 is enabled. Level 1 were set at the local machine.. level 2 are
only residing on the exchange server.
James MontgomeryCommented:
Can you point to documentation that specifies this (I'm genuinely interested - I thought this was a client side setting and have several documents referring only to Outlook).
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DaveICCAuthor Commented:
there is ms article :

If it is a setting only on client side, why do i get a prompt to save the file before opening it event after
the key level1remove as been added.. this is where i am confused.

James MontgomeryCommented:
This get more interesting the more i look.

Browse here:

again this refers to outlook....


Add/Remove Level 2 file types

There are no Level 2 file types by default, but the list of Level 2 file types is in the Level1Remove key.

NOTE - If you are an Exchange Administrator, you can add or remove attachment types from the list of Level 2 file types through the Outlook Security Settings tab of the Outlook Security form.

Can you check your local machine for these?

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DaveICCAuthor Commented:

Maybe some more info will help, i am using Outlook 2003 for exchange distributed with SBS2003.
In the security tab, i don't see anything related with file type.. is there something different with that version..

James MontgomeryCommented:
what about if you open regedit on your machine and browse to the keys mentioned?
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