troubleshooting Question

#550 4.4.7 QUEUE.Expired; message expired ##

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mdmmpFlag for France asked on
ExchangeSBSEmail Servers
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Hello, I have a problem with my Exchange mail server
A user have the message #550 4.4.7 QUEUE.Expired; message expired ## since thursday on mail with @orange.fr
In the message queue I have this message, the email provider orange.fr tell me that my Ipadress is blacklisted
1But when I check on Internet blacklist, I'm not in :
http://mxtoolbox.com/SuperTool.aspx?action=blacklist%3asarl-coupe.com&run=toolpage
Do you know a solution to resolve this problem ?
ASKER CERTIFIED SOLUTION
Robin Human
Head of Network Services

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