We host an Exchange 2003 server.
I have multiple users with iPhones that access their exchange mail accounts.
A couple of users are unable to forward emails that contain attachments.
Error message they receive is...
Cannot Send Mail - An error occurred while delivering this message
I have tried...
1. Closing re-opening Mail app.
2. Switch iPhone off and on again.
3. Resetting iPhone using Power and Home button function.
4. Backing up the iPhone, erasing it and restoring the backup.
All of the above have not resolved the issue.
I have added one of the users accounts to a "known working" iPhone, the issue persists.
Indicating to me this is a problem with the users mailbox, rather than the iPhone.
Can anyone assist me on this problem? I have tried searching Google, and not found any solutions yet.