Exchange,mailbox size active directory

I have in AD 3 gig group when users are added in it. and script runs from task scheduler  which converts user mailbox to 3gb

we recently converted to 4gb.

but some users are getting this automated message at 1am in their mailbox, how can I remove them (attached message)

even they are in 4gig group and their users mailboxes are below limit.
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pramod1Asked:
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Felicia KingConnect With a Mentor Commented:
I agree with schnell. It's the warning limit. The reason some users would get the message and not others is because the ones getting the message have current usage that is close to the warning limit set on their mailboxes. When you change the upper limit on mailboxes, you also have to change the warning limit setting at the same time.
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Schnell SolutionsSystems Infrastructure EngineerCommented:
It is that despite that the limit for your users is high. It looks like that the 'Warning threshold' is not.

Ideally, if you are controlling the sizes with a script, you should control the warning threshold with a script as well.

The example for changing the warning limit for just one user is as follow:

Set-Mailbox "John Smith" -IssueWarningQuota 2GB -UseDatabaseQuotaDefaults: $False
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pramod1Author Commented:
but why only some users it should be for all users then?
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Schnell SolutionsSystems Infrastructure EngineerCommented:
Maybe that is the only user who has exceed the current warning limit.

If you want to review the warning limit for all your users and then visualize which ones are incorrect you can use:

Get-Mailbox | Select Name,IssueWarningQuota
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pramod1Author Commented:
to moderator

I needed to share points with schnellsolutions as this was his original answer please reopen my question so I can share points.
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