NDR 550 5.7.1 Submission has been disabled for this account

You may get NDR message below when sending emails in co-existence environment with Exchange 2010. There may be NDR only when you send email from Exchange 2003/2007 and it gets routed thru Exchange 2010 HUB transport server. Error: -------------------------------------------------------------------------------------- Delivery has failed to these recipients or distribution lists: anil.singh@abc.com Your message wasn't delivered because of... Continue Reading →

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