Unable to send large attachments greater than 500KB from IPhone with Exchange 2010

We found some missing permissions to be the reason for this issue, to resolve the issue follow the below steps

  •  On the Exchange Server server, right-click My Computer, and then click Properties.
  • Click Advanced, and then click Environment Variables.
  • In the System Variables field, scroll until you see TEMP. Note the path for TEMP. For example, this path may be the following path:
  • Open Windows Explorer, locate the folder that you noted in step 3, right-click the folder, and then click Properties.
  • Click Security, and then add the Authenticated Users Make sure that the Read & Execute, List Folder Contents, and Write permissions are selected for this group.
  • Click Start, click Run, type cmd, and then click OK.
  • Type iisreset.

Hope this quick fix resolves your issue, if not feel free report new issue at our forum

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An automobile enthusiast at heart and computer geek by profession, started my Career with MS in 2005.Left Jobs and started Pledge Technologies (the parent company to Grishbi) back in 2009.We have been providing IT consulting to various Small and Medium businesses across US and UK since then.Our company specialises in Microsoft Server technologies like AD, Exchange, the rest and with numerous Office 365 migrations under our belt, we quite an expert with that too. Whatever we learn in our day to day life, we share it back on Grishbi as a Thank for all the love and support our customers have given us.
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