Why is PDF iFilter installed on my Exchange 2003 Server?

Posted on 2011-10-07
Last Modified: 2012-05-12
Just wondering if anyone knows if Adobe PDF iFilter is automatically installed with any updates or programs.  I don't recall ever installing it.  I don't even know what it is and why it would be on my Exchange server.

We have been having problems with receiving emails with attached PDF's.  It can take hours and hours to receive them.  Could the iFilter be causing this?
Question by:Dennis_Atkins
    LVL 12

    Accepted Solution

    It is used to index the text in PDF files using MS indexing. Do you have full text indexing enabled?

    " The latest version of PDF iFilter 32–bit is always bundled with Acrobat and Reader and gets installed automatically with installation of any of the above software."


    Author Comment

    Full text indexing is not enabled.

    Also, I don't see the iFilter installed on any other servers or workstations.  Is it just installed automatically on Exchange servers?

    Do you have any insight into why an email with a attached PDF would take so long to be received?
    LVL 12

    Expert Comment

    What about anti-virus for Exchange? Is it possible it is using the filter for checking PDFs?
    Anti-virus can also interfere with emails in unusual ways sometimes.

    Maybe someone installed Adobe reader, etc? Any other app on that server? Sharepoint services, or anything like that, which may use it?
    LVL 38

    Assisted Solution

    Are you seeing the iFilter listed as a separate component under Add/Remove Programs?  If so it was specifically installed.  You won't see if listed when it's just installed as part of Adobe Reader.
    The only time I have specifically installed it was to get indexing of PDF files working in conjunction with a SharePoint site.

    Author Closing Comment

    Thanks for the info.  Just unistalled it and I am moving on.

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