Just for my own curiosity, if I disable outbound replication on a domain controller permanently, but left inbound replication enabled would the tombstone lifetime be in effect?
Another way to put this question is: does a DC have to confirm inbound AND outbound replication is functioning in order to consider itself synced and functional?
I would never do this and realize it is a bad idea for a number of reasons. I was just thinking about what would happen if this was done.