is anything else installed on the server you have BES on, like exchange?
Code:
Caused by: java.lang.Exception: problem creating sockets (bind_addr=EXCHANGE.SERVER.mydomain.com/192.168.0.115, mcast_addr=null)
at org.jgroups.protocols.UDP.start(UDP.java:379)
at org.jgroups.stack.Protocol.handleSpecialDownEvent(Protocol.java:571)
... 130 more
Caused by: java.net.BindException: Address already in use: Cannot bind
do you have IIS running or another tomcast instance?