Riposte solution
The server believes the client sent an illegal or nonsensical command. This might indicate a bug in how the request was formed. If using Riposte, such an error should be rare and might warrant contacting support. If you are sending custom IMAP commands, review them for correctness. Resolve any client logic issues and try again. Ensuring compliance with IMAP protocol will prevent this error.
Quick facts
- Provider
- IMAP
- Endpoint / surface
- IMAP Protocol
Why it happens
[Protocol-level condition per RFC/extension]
How to fix it
[Adjust client behavior per RFC semantics; often retry or change command/parameters]