I partially agree on the storage
While configuration storage is of little concern to me, mailbox index storage is more of a concern. In this regard, I have seen that there is the possibility on the single box to request the reindex, but it is not clear to me if the reindex operation is still done automatically on all boxes every x time
I'm also worried about greylisting.
If the traffic on the site is high where is the greylisting data stored? It may generate large files.
Sabatino Traini
Chief Information Officer
Genial s.r.l.
Martinsicuro - Italy