Emails bouncing back from Calendar updates but nothing else. Exchange 2013

I have a user that is having trouble with people scheduling appointments. I can set up a calendar invite and invite her to a meeting and it works ok, then if I update the meeting, send a comment or cancel the meeting I get a bounce back. Delivery has failed to these recipients or groups:
xxx xxx (
The recipient's mailbox is full and can't accept messages now. Please try resending this message later, or contact the recipient directly.

However I can send the user regular emails, she does not have the largest mailbox in the company and everything else is fine. She is using the default mail quotas. Everything else in Exchange looks like it is the right setting, however if I try to move her mailbox to another database, I get the error in the attachment; Mailbox Dumpster size 100.1GB....and so on.
I assume they are related but have no idea why either issue is happening. All input welcome
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SeanSystem EngineerCommented:
Sounds like you'll need to clear out the recoverable items.

You can verify this by running this command:
Get-Mailbox "user" | Format-List RecoverableItemsQuota, RecoverableItemsWarningQuota, ProhibitSendQuota, ProhibitSendReceiveQuota, UseDatabaseQuotaDefaults, RetainDeletedItemsFor, UseDatabaseRetentionDefaults

This will clear out the dumpster assuming you have the proper rights to do so.
Search-Mailbox -Identity "user" -SearchDumpsterOnly -DeleteContent
Thor2923Author Commented:
well not only did I actually type everything correctly the first time, I got the output from the attachment below. Does that appear that I need to run your second command? I want to be sure I do not delete anything that is important. I want to be extra careful running anything with the word "delete"
Thor2923Author Commented:
is there an option besides deleting? We may need to keep the data on her "dumpster"
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SeanSystem EngineerCommented:
You could increase the quota.

Set-Mailbox "user" -RecoverableItemsQuota 50Gb -RecoverableItemsWarningQuota 50Gb -RetainDeletedItemsFor 3650 -ProhibitSendQuota 50Gb -ProhibitSendRecieveQuota 50Gb -UseDatabaseQuotaDefaults $false -UseDatabaseRetentionDefaults $false

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Thor2923Author Commented:
In my case I assume I would want 150GB instead of 50GB since I read my current quota to be 99GB????

RecoverableItemsQuota        : 100 GB (107,374,182,400 bytes)
RecoverableItemsWarningQuota : 99 GB (106,300,440,576 bytes)
ProhibitSendQuota            : unlimited
ProhibitSendReceiveQuota     : unlimited
UseDatabaseQuotaDefaults     : True
RetainDeletedItemsFor        : 14.00:00:00
UseDatabaseRetentionDefaults : False
Thor2923Author Commented:
I am a little concerned about deleting a users "dumpster" I have been looking around and it seems to be ok, but what exactly is the individual dumpster for a user and what will he or she lose if I did clear the Dumpster or get rid of recoverable items as stated above? Will it make a physical difference in your local outlook? If I am removing something the user does not even know about, I might as well do it
SeanSystem EngineerCommented:
No difference. The items in the dumpster are items that have been deleted AND deleted from the trash. It's the items that are available when doing the recover deleted items option.

These items are usually deleted after, I believe, 14 days by default, automatically unless put on hold for legal reasons such as a law suite that involves that person. (litigation hold)
Thor2923Author Commented:
once I bumped up the problem mailbox's dumpster, the calendar started working...thanks
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