Dear support,
Here is her situation. First, this mailbox is used over the size (up to 110%). Then, I let her delete unused mail until its size down to 80%. In control panel, Mail Administration -> Mail accounts -> oriental4 -> Mailbox action, it changed to green color after ever be red color during the oversize of mailbox. Anyways, It still work work for using MS Outlook to send and receive emails. Its error message show and server reject your login.
Could you please investigate this situation.
Best regards