Could be Cluster
Replication is defaulting to a Port/Protocol that is having problems connecting
to the other 2 servers...
I believe Replication
tries a little harder and if it fails on one port will the next port.
I had seen this at one other customer where a firewall setting was
blocking the Cluster Replication but Replication would succeed because
it eventually found a port that was open.
When you replicate
from Server 3 to the other servers try forcing each port to see which one
it succeeds on...
Send me mail if
this does not work and we can investigate some more...