One specific user gets an error when trying to send emails with attachments. Attachments are usually pretty small PDF files or images, and all the error says is
Microsoft Outlook cannot send this item.
I've ran connection tests to the Exchange server, all pings are <1ms.
She also tries to save drafts sometimes and receives an error that the item could not be saved.
PC was recently reloaded entirely and that's when this started.
We've tried repairing office, and recreated a new Outlook profile and connected to her Exchange account on that, same issue still persists. No other users in the office experience this issue at all.