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External emails are staying in the message queue

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gwhitson

Technical User
Sep 14, 2004
36
US
All emails sent outside of the domain are staying in the message queue with following error.
451 4.4.0 primary target ip address responded with "421 4.2.1 unable to connect"

Thanks
 
check if the you have more than 4GB of space all disks where you have exchange logs,database and any exchange related stuff as u need atleat 4GB free space for exchange 2007
 
Thanks for the reply, The problem truned out to be with our firewall
 
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