Cant send mails in Exchange 2007

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
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Sajid Shaik MSr. System AdminCommented:
check the servicese startup type AUtomatic should all started..
check event viewer..

all the best
SysToolsData Expert - Recovery,Backup,MigrationCommented:
Go to Microsoft Exchange Test Connectivity Analyzer and test the connectivity:
AlkannetworksAuthor Commented:
all services are running and test passed
domain :
Simplify Active Directory Administration

Administration of Active Directory does not have to be hard.  Too often what should be a simple task is made more difficult than it needs to be.The solution?  Hyena from SystemTools Software.  With ease-of-use as well as powerful importing and bulk updating capabilities.

Hani AlhabshiSystems EngineerCommented:
Check>> ToolBox>> Queue Viewer
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
AlkannetworksAuthor Commented:
no mails in queue , and nothing changed in send or receive connectors , and all services restarted
Hani AlhabshiSystems EngineerCommented:
do you have new Polices on Transport Rules , try disable all ?
AlkannetworksAuthor Commented:
no new policies all default
IvanSystem EngineerCommented:

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?

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.
AlkannetworksAuthor Commented:
thanks , I found the problem in GFI after remove it all things working fine

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.