Cant send mails in Exchange 2007

dear
I have critical situation , suddenly any user cant receive mails in my organization , i have exchange 2007 i can send mails but nithing reicved even internal
what i can do
i review all settings which was used before and it is up and running
AlkannetworksAsked:
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Sajid Shaik MSr. System AdminCommented:
check the servicese startup type AUtomatic should all started..
check event viewer..

all the best
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SysToolsData Expert - Recovery,Backup,MigrationCommented:
Go to Microsoft Exchange Test Connectivity Analyzer and test the connectivity:
https://www.testexchangeconnectivity.com/
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AlkannetworksAuthor Commented:
all services are running and test passed
domain : mail.eim-eg.com
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Hani AlhabshiSystems EngineerCommented:
Check>> ToolBox>> Queue Viewer
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Hani AlhabshiSystems EngineerCommented:
any user cant receive mails in my organization

have you made some changes with receive connectors ? check if they are enabled /disabled

restart Microsoft  transport service
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AlkannetworksAuthor Commented:
no mails in queue , and nothing changed in send or receive connectors , and all services restarted
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Hani AlhabshiSystems EngineerCommented:
do you have new Polices on Transport Rules , try disable all ?
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AlkannetworksAuthor Commented:
no new policies all default
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IvanSystem EngineerCommented:
Hi,

maybe it is back pressure? How much free hdd space you have, in %, as well as RAM and CPU usage? Any errors in event viewer?

Regards,
Ivan.
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Hypercat (Deb)Commented:
I'm with Ivan - probably back pressure, so check your free space on the system drive of the Exchange server (or other hard drive where Exchange is installed if not the system drive). Also check the Event logs - if it is back pressure you'll probably see some warning events indicating what is causing the issue.
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AlkannetworksAuthor Commented:
thanks , I found the problem in GFI after remove it all things working fine
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