Exchange 2010: Public Folder Replication Messages Stuck in Shadow Redundancy Queue

All of my hub transport servers in one AD site have public folder replication messages stuck in the shadow redundancy queue to another AD site.  The messages are not getting discarded.  I've been manually deleting the messages from the queue.  I tried restarting the Microsoft Exchange Transport service one of the Hub Tranport servers with no luck.  I'm trying to avoid a server reboot.  Has anyone seen this before?
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AmitIT ArchitectCommented:
You can leave it, it will cleared automatically.
bsohn417Author Commented:
The problem is that the messages are sitting in there past the message expiration time.  The hub transort servers are not receiving a discard notification.
bsohn417Author Commented:
The public folder replication messages were destined for an Exchange 2007 server in a DR site that had no transaction log space.  Wasn't aware this box even existed.

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bsohn417Author Commented:
Resolved on own.
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