I would make a bet that one of them is actually not a binary XLS file, but an XML or XHTML file. Open them up in your favorite editor and see.
I thought I'd written a blog post about that at one point, but can't find it. Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com -----Original Message----- From: Osborne, Richard [mailto:richard.osbo...@wth.org] Sent: Wednesday, January 12, 2011 12:14 PM To: MS-Exchange Admin Issues Subject: Outlook Web Access attachments Exchange 2003 SP2 Outlook Web Access. I have an e-mail with two .XLS attachments where one opens directly and one has to be saved to disk first. .XLS is not in the Level1FileTypes or Level2FileTypes registry key on the OWA server. Why the difference in behavior? It seems like it could be because of the Level1MIMETypes & Level2MIMETypes registry keys. Can different attachments have different MIME types and how can I tell? Thanks. Richard Osborne Information Systems Jackson-Madison County General Hospital NOTICE: (1) The foregoing is not intended to be a legally binding or legally effective electronic signature. (2) This message may contain legally privileged or confidential information. If you are not the intended recipient of this message, please so notify me, disregard the foregoing message, and delete the message immediately. I apologize for any inconvenience this may have caused. --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist
