Hi All, I have install Exchange 2007 CCR cluster on Windows 2008 servers using this guide. http://www.msexchange.org/articles_tutorials/exchange-server-2007/high-availability-recovery/deploying-exchange-2007-sp1-ccr-cluster-windows-server-2008-failover-cluster-part1.html\ Everything want well with the install but when I sent email the email goes to the draft folder if I use OWA and if I use outlook it goes no where (i cant see the email after i press send). I have used the mail flow tool and I get this error : The value for the '\MSExchangeIS Mailbox\Messages Queued For Submission' counter on server MBX is greater than zero (average value is 13) and it appears that 'MSExchangeMailSubmission' is failing to submit messages to at least one computer with the Hub Transport server role installed over the last minute. Can someone please help ? The layout is this DC - server 08 Custer 1 - server 08 Cluster 2 - server 08 CAS client access - server 08 Cheers, Simon

Which server is your Hub Transport server? Presumably you've co-located Hub and CAS on the same box...Are all the correct services running? Try running Test-ServiceHealth on the Hub and active cluster node.Neil Hobson, Exchange MVP

Hi Neil,Yes, The CAS and the Hub are on the same server.All services are runining as far as I know (I checked that)I'll try the test and will update.cheers,simon

Hiyes this may be space issue on the hub transport server or mailbox verify it , and find the events log on mailbox server and hub transport server.RegardsSyed Arsalan .syed.arsalan

Hi Neil,Please have a look at another post, maybe it is helpful.Exchange 2007 OWA Can not Send Email bouncing own Drafts Folderhttp://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/2882fd4c-30c6-424f-8ef6-ea5663edb6db/Frank Wang

Any connectivity issue between MBX and HT server?Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

Hi Guys,Thanks for the help.I fixed the issue by changing this settings in the Transport config file:<add key="PercentageDatabaseDiskSpaceUsedHighThreshold" value="90" /> The defualt value is 0.Thanks for all your help.I think beacuse all the servers are virtual machines (runing on Hyper V) there is a lot of load on the Disks which make exchange use the back-pressure function.Cheers,Simon