Ideally it should be fixed in Directadmin, but a potential workaround is to override the default umask (set it to 0027) for the shell environment Directadmin runs in (the exact specifics depend on your setup).
Ah, I see. That makes sense as long as the
/home sync isn’t intended as a backup because any changes on “main-server” would typically be replicated by Syncthing to “backup-server” in 60 seconds or less.
Duplicacy, Duplicacti, or other similar backup tool might still be of interest because they offer deduplication.
No, I’d recommend leaving those two settings disabled.
Besides the performance impact (less of an issue if the storage is a SSD and depending on the filesystem type), there are additional considerations.
For “Send Ownership” to work, Syncthing on the receiving end would generally need elevated privileges (e.g., root) if the files and folders have mixed ownership, plus it works best when both endpoints are the same operating system (along with a suitable filesystem capable of actually recording ownership).
“Send Extended Attributes” requires support for xattrs and there’s no standard across operating systems, so it’s best used between the same OS and compatible filesystems.