Name: sync_log_unsuppressable_channels
Type: STRING
Default-Value: squatter
Last-Modified: 2.5.0

If specified, the named channels are exempt from the effect of setting
:imapdconf:`sync_log_chain: off <sync_log_chain>`, i.e. they are always
logged to by the sync_server process.  This is only really useful to allow
rolling search indexing on a replica.
