Import upstream v0.16.25, stripped

Upstream commit: 3f657330c0f49a015a3a372fb59669b5cccbca6d
Enterprise-only files removed or emptied: 63
Enterprise-only snippets removed: 118 in 50 files
Dangling module declarations removed: 5
Edits turning enterprise off: 25
Third-party code: 14 files, 0 not in THIRD-PARTY.md
Renamed identifiers: 67 in 19 files
Verification: clean

The same Enterprise footprint as v0.16.24. The build check is clean
apart from the expected errors in the rebuilt-feature tests. A
bug-fix release: DKIM rotation, IMAP failed-login answers, DNSBL
multi-code scoring and negative TTLs, Pyzor on short messages, queue
quotas with an empty match, RocksDB info-log rotation, and
Autodiscover schema handling.

crates/store/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "store"
-version = "0.16.24"
+version = "0.16.25"
 edition = "2024"
 
 [dependencies]

crates/store/src/backend/rocksdb/main.rs

@@ -24,6 +24,8 @@ const CHURN_DELETION_WINDOW: usize = 4096;
 const CHURN_DELETION_TRIGGER: usize = 1024;
 const CHURN_DELETION_RATIO: f64 = 0.5;
 const BYTES_PER_SYNC: u64 = 1024 * 1024;
+const MAX_LOG_FILE_SIZE: usize = 10 * 1024 * 1024;
+const KEEP_LOG_FILE_NUM: usize = 5;
 
 #[derive(Clone, Copy)]
 enum CfProfile {
@@ -115,6 +117,8 @@ impl RocksDbStore {
             .set_db_write_buffer_size((config.buffer_size as usize).max(MIN_DB_WRITE_BUFFER_SIZE));
         db_opts.set_bytes_per_sync(BYTES_PER_SYNC);
         db_opts.set_wal_bytes_per_sync(BYTES_PER_SYNC);
+        db_opts.set_max_log_file_size(MAX_LOG_FILE_SIZE);
+        db_opts.set_keep_log_file_num(KEEP_LOG_FILE_NUM);
 
         Ok(Store::RocksDb(Arc::new(RocksDbStore {
             db: OptimisticTransactionDB::open_cf_descriptors(&db_opts, idx_path, cfs)