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Exchange Attachments

Discussion in 'Software' started by AJ, May 14, 2008.

  1. AJ

    AJ Administrator Administrator

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    I've got an issue with exchange at the moment and it's causing a few problems.

    We are running Exchange 2003 with a front end server (same edition). All of the pupils use OWA to access/send their emails as do most of the staff. We did an upgrade earlier this year to Office 2007 and now when they send work to their teachers, the teachers receive a .zip file rather than a .docx file and they can't open the attachment.

    I found what could have been a solution on the Microsoft web site that the extensions were not registered mime attributes in IIS. Entered them into IIS on both the exchange server and the front end server. I have also done this in exchange as well.

    This only seems to be an issue for those using OWA as I can receive these attachments using regular Outlook no problem.

    Thanks
     
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  2. wagnerk
    Highly Decorated Member Award

    wagnerk aka kitkatninja Moderator

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    Strange, we're also running Exchange 2003 in the Frontend/back-end config and have had no additional problems with Office 2k7 files.

    -Ken
     
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  3. Notes_Bloke

    Notes_Bloke Terabyte Poster

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    What browser version are you using - IE6/7?

    Have you tried OWA in firefox to see if it still misbehaves?

    NB
     
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  4. Tinus1959

    Tinus1959 Gigabyte Poster

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    Just to get this straite: the students send a docx file and OWA transfers this into a zip file?
     
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  5. AJ

    AJ Administrator Administrator

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    Mixture of IE 6and 7. TBH no not tries in FF. As FF can not be controlled by group policy we aren't using it.

    That's about the sum of it. It's either an OWA problem or Exchange
     
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  6. Notes_Bloke

    Notes_Bloke Terabyte Poster

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    Are these the entries that you added to IIS?

    NB
     
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  7. AJ

    AJ Administrator Administrator

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    Yup thems the ones
     
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  8. Notes_Bloke

    Notes_Bloke Terabyte Poster

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    :scratch

    Did you restart the World Wide Web Publishing Service after adding them in?

    NB
     
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  9. AJ

    AJ Administrator Administrator

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    Hmm not sure that we did. Just restarted the www service and lets see what happens.

    Thanks for your help and I'll let you know how we get on. :thumbleft
     
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  10. AJ

    AJ Administrator Administrator

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    Right update on this.

    restarted the WWW service on both the exchange server and the front end server and it's still happening :x

    Any more ideas please peeps
     
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  11. Stoney

    Stoney Megabyte Poster

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  12. zebulebu

    zebulebu Terabyte Poster

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    AJ - are you rotuing mail internally through an AV/Anti-Spam appliance? Could be something to do with MIME settings for the O2K7 file formats on them if you are. The .docx, .xlsx, .pptx etc extensions are actually archive files, which may indicate why they're being seen as zips.

    I'd also check that your desktop firewalls are not being spiteful about zip files - especially if you're using something clever (a layer 7 inspection firewall like the ISA client would be a prime example)

    It might also be worth checking through MAPI conversion in Exchange itself - Exchange converts MAPI messages to the OWA-represnentable format and needs to have files registered so that it understands the process.

    Open ESM and go to the following location and see if the attachments are correctly registered there. If not, then you'll need to find out how to register them - I had to do this a couple of years ago for something, but can't for the life of me remember the article I used!

    [​IMG]
     
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  13. AJ

    AJ Administrator Administrator

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    Zeb

    Nope all internal mail is routed locally and not through our antispam/AV people.

    Sparky, that's for the links mate. They all seem to be for stopping attachment types and the new Office formats do not appear in those lists, so I can't see how they are being changed.
     
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  14. Stoney

    Stoney Megabyte Poster

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    Sparky heh? :twisted:

    From what I read about those docx files is they are actually compressed/archived Word documents. Outlook knows how to open them because it is part of office, but Internet Explorer only sees them as archived files because it doesnt' know what they are, to IE they're just archives or zip files.

    Most places say to set the MIME types in IIS, like you have done and then this seems to do the trick. Obviously not in your case!
     
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  15. AJ

    AJ Administrator Administrator

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    Stoney sorry mate doh at me

    anyway, this is the entry in the IIS and exchange where Zebs image is shown

    application/vnd.openxmlformats-officedocument.wordprocessingml.document

    with the extension type docx

    That's just the word entry, all the others for the other office applications are the same.

    Thanks for your time guys
     
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  16. zebulebu

    zebulebu Terabyte Poster

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    Interesting - I've just checked the Exchange server in my lab and everything is as it should be. Routing through my FE server I can open 2007 file format attachments via OWA without problems. Since you seem to have all your attachment types properly registered, it might be time to open a call with PSS If you do, or you find a fix for it, let me know - I'm sure I'll end up coming across a similar problem as smaller private customers I support start rolling out O2K7 more widely.

    Just for ****s & giggles, have you done any delving through newsgroups looking for posts on IE to see if its being mean about the attachment type?

    And, as a temporary workaround, can they download the zip file and then rename the extension to .docx, .xsls etc?
     
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  17. AJ

    AJ Administrator Administrator

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    Yup I think you may be right.

    Job for next week when I might have a bit more time.

    As for people changing the file extension, yea the kids would be OK doing that no problem, but the teachers hmmmmm nough said there :dry
     
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