Outlook 2007 meeting request to external addresses

5 pts.
Tags:
Microsoft Outlook 2007
Microsoft Outlook meetings
Is there a limit to how many external invites that can be included from the Outlook meeting request window? When sending a request to 10 external recipients we get a 4.4.7 delivery error. Resending the same message to 3 - 4 at a time goes through.

Software/Hardware used:
Outlook 2007

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As far as I could find out from the Microsoft forums its 255. Here is a brief bit of info.

I was designed this way to avoid potential DOS attack.

It supports a maximum of 365 Accounts.

Many isp’s will not allow that many recipients on a message. If you use anything but exchange server, there is usually a liimit based on the length of the address string. If you are using an Exchange server, the limit is whatever the admin set the max allowed recipients.

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