Outlook stripping PDF attachments on certain users

We are running Exchange 2003 with Outlook 2003, 2007 and 2010.  One of our vendors sends us a PDF attachment to both myself running 2010 and another user running 2007.  I get the attachment but he does not.  Even if I open his E-mail in OWA the atttachment is not there.  I have looked at my firewall settings, GFI settings and cannot find any clue as to what is causing it.  It is only from certain outside people as he can get PDF attachments from other people.  Any help would be much appreciated.

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GamblingDanConnect With a Mentor Author Commented:
Thanks for the input but could not find anything that could affect this user??  I ended up creating an entire new AD user and tansferred everything over.  Resolved now.
Thanks again
Md. MojahidCommented:
Did you check any policy are applying for that user and also try to update his outlook.
Exchange attachment policy.  Do you have external filtering that is configurable per user?
Iain MacMillanIT ManagerCommented:
would make life easier on your self and your group policy settings to have everyone on the same version, as 2003 is no longer supported so it won't get any fixes or security updates.

that said, this looks to be a policy setting on the user, perhaps an older GPO affecting a 2007 setting -- have you imported your Office 2010 ADM/ADMX files into your DC??  If not then you would not be affected by the 2007 setting.  Also check your AV package on your systems, as your settings/policy for that may also block/remove if its set in the email scanner.

Is there another 2007 user you can send an email with PDF attachment to see if they get it -- might be ok with internal trusted email, try sending a PDF from a gmail or such like account?
GamblingDanAuthor Commented:
it worked?
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