I have a 4 member 2013 DAG with 2 of those members holding only offline DB copies. One of those 2 "backup" DAGs is continually referenced in delivery reports for messages. If that server is not hosting any active DBs or mailboxes, why are messages transiting that server?
A few more details that make it unclear as to why that server is being referenced, both backup servers are in a remote site, the internet send connector excludes the to backup servers as "sources". The message tracking references in question are always inbound to users mailboxes, not outbound.
There are no message flow problems that I am aware of, just this unexplained path.
Please let me know if there is any other information I can provide and thank you in advance for your assistance.