Riposte solution
HIGHESTMODSEQ indicates the highest modification sequence for the mailbox (used in conditional sync). It's provided by the server for reference. Riposte will handle this for incremental syncing if it uses QRESYNC. No action needed from you; it's informational to ensure clients know the latest modseq.
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]