Hi,
I'm facing with this issue since 1 week. All computers have Outlook 2010 installed and the server is Exchange 2010 with the roll-up 3 installed last week (more or less when the problems begun).
After making a lot of tests, I determined the cause of my problem but I don't know how to fix it.
All users are creating new emails with their default signature, including a logo in jpeg format.
So there is no problem whether the email is sent directly without saving it. This problem appears only if the email is saved in the draft folder and closed. After opening this draft we cannot send the email (error: The operation failed)
except if the jpeg logo is deleted.
Any help would be greatly appreciated.
Thanks in advance.