My queue count on Hub and cas server is growing to 54 message count on DNS connector delivery

we have office 365, what should I look here for
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Guy LidbetterCommented:
Hi There,

You are talking about O365 but your post title is Exchange 2010?

As you are talking about Hub and CAS server, I assume that's a 2010 on premise??
pramod1Author Commented:
I am talking about exchange server 2010 , I referred to DNS connector delivery because the count is high and we have office 365 as well
Kash2nd Line EngineerCommented:
are you on hybrid deployment. AD Sync?
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Guy LidbetterCommented:
Have you looked at the queues and confirmed what the next hop is? As its DNS queues I imagine this is outbound from your organisation.

Do you use any smart hosts? (Messagelabs, ironport etc...)
pramod1Author Commented:
I see inbound emails from proofpoint, but the spike is going low and high is it because of office peak time
Guy LidbetterCommented:
That is very possible. As long as they are dropping again there should not be any issue. If the queues are rising and remaining up there, there will be an issue somewhere.

Otherwise, this may just be peak traffic.

How many mailboxes are we talking about?
pramod1Author Commented:
message count varies from 52 to 70 and then down , mailboxes more than 5000
Guy LidbetterCommented:
I would say that's normal in that case.
Nothing to worry about...

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