EXCHANGE 2010

I got scom alert that on of my exchange server queue high count : 71

it shows DNS connector delivery? what does that mean

we just started migrating room mailbox migration to office 365.

how do I know if my queues are normal
pramod1Asked:
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Amit KumarCommented:
Still you have Exchange server in place with you please check in queue viewer if there are queues available. in case DNS connector delivery issue please check if any send connector you have configured to route e-mails over Office 365.
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Scott CSenior EngineerCommented:
Looking at your queues using QueViewer...what do you see?

If the queue spikes for a bit then empties, you are fine.
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pramod1Author Commented:
yes we have send connector for office 365
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Amit KumarCommented:
so check if smart host is getting resolved with office 365 dns name and also check queue viewer how many mails are stranded.

It should be resolved from your Hub or edge if available in your env.
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pramod1Author Commented:
i see mapi delivery and dns connector delivery  in queue viewer what is the meaning
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Amit KumarCommented:
can you try sending e-mail to yourself from exchange is it delivered or not? Also check if your mailbox services has any issue and any event is logged in event viewer.

did you confirm send connector smart host for Office 365 is getting resolved?
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pramod1Author Commented:
yes it is resolved

difference between mapi and dns connector delivery
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Amit KumarCommented:
Mapi delivery is which is getting stuck while mail are sent to mailbox server, please check if your mailbox servers are fine and there are no issues with disks space.

DNS connector means mails are getting stuck because DNS is not resolved or not able to connect.

Try suspend both queues and retry them.
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