Exchange Internal/External Emails delayed

I am having a issue with one of exchange server in our organization;
every morning I see queues for internal exchange servers connectors as well to the external - internet connector and it is happening from last 3 days.

Sometimes mails are delayed for 2 hours approx

What I have done so far :
IIS Reset and server restarted on effected exchange server every morning, it goes well after that but happens again in 20 hours.
IIS Reset on all other exchange server
IIS Reset on F.E. Server and also rebooted that
Check the DNS setting - looks fine
Can ping each other exchange servers
Checked the Event Viewer, following is the message

Event Type:      Error
Event Source:      MSExchangeFBPublish
Event Category:      General
Event ID:      
Date:            1/29/2008
Time:            9:15:07 AM
User:            N/A
Computer:      ETH-EXCH
System Attendant Service failed to create session for virtual machine ETH-EXCH. The error number is 0xc007052e.

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Who is Participating?
Computer101Connect With a Mentor Commented:
PAQed with points refunded (500)

EE Admin
I would check the bandwidth allocated for that server.

If bandwidth is limited, usually e-mails start queuing up. Also, it could be related to a network problem - perhaps the network card, or network speed mismatch with the switch it is connected to.

For example, the network card is full duplex 100 Mbps whereas the switch is set to half-duplex or 10 Mbps.

I've had similar issues and after lots of wasted hours digging deep within the settings of Exchange, bandwidth issues were the hidden causes (in our case, we had limited bandwidth for that specific mail server using a Security device).
kamleshgwalaniAuthor Commented:
The solution was symantec anti-virus was installled with file system check, after we un-installed and installed symantec anti-virus for exchange server then it was working.
Anyway thanks for your suggestion and sorry for not posting reply on time
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