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mikedotm

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Getting an error message immediately back when sending an meeting invite

I have a user that is booking a meeting with 5 people. Two are local on our Exchange server and 3 are outside the company. He claims they are valid email addresses and he sends email to them. He gets the error message below immediately back for each user.

Users name

This message could not be sent. Try sending the message again later, or contact your network administrator.  Error is [0x80070057-00000000-00000000].

Its listed 5 times. One for each user.

I don't even know where to start. He claims this has worked before.
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jimmymcp02
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Are you sure that the recipient has outlook installed if so what version?
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mikedotm

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I can tell you 2 of the users have Outlook because they are part of our Organization. In fact, they are on the same server as the sender. The other 3 recipients are customers outside our company. The sender claims he can send email to them and he has sent meeting requests to these people before. I don't understand why all 5 recipients are erroring out. Even the ones on our Exchange server. The sender says the message comes back immediately. Its like Exchange is not even trying to process it. Bad profile on the sender??
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Ok i thought that you were only having the issue with the issue with the user outside of your organization...sorry about that.

Ok lets try the folllowing

Try the following if an attachment is being sent send a test meeting request to one of your user in your organization with out the attachment.
If that works then perhaps there is something wrong with the attachment you can change the name of the attachment try a different attachment.

If you are not sending an attachment then try sending a meeting to one user at the time instead off all 5 users and post back.

Also what outlook is your user sending the email from if is 2003 make sure that  you have the latest SP2 installed.