Exchange error email

I'm running exchange 2013.  I have a user that keeps on getting these kind of emails.
What exactly does this mean?  Or how do I resolve it?

One or more folders in your mailbox is named incorrectly.
The name of one or more of your folders includes the character "/" or more than 250 characters. Folders with names that include this character can't be downloaded to your IMAP e-mail program. Please rename these folders:
•      LSC / RR Donelly (INBOX/AF–PUBLISHING/Publishers/LSC / RR Donelly)
•      ADS GROUP (DVD / Replication) (Work/13. PUBLISHERS/ADS GROUP (DVD / Replication))
•      TSI (DVD Printiing / Replication) (Work/13. PUBLISHERS/TSI (DVD Printiing / Replication))
•      Kentucky / Tennessee (Work/19. SPECIAL SITUATIONS/Conferences/Kentucky / Tennessee)
DanNetwork EngineerAsked:
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DanNetwork EngineerAuthor Commented:
So the way I understand it is, the character / can't be used, is that the case?
Yes - that is correct.

Get the user to rename and use something else, such as -- (two dashes) - whatever the like, but not /


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Frequently, when people use a / they are using as a shortcut for 'and' or maybe 'or' so perhaps get them to rename using one of those such as:

Kentucky and Tennessee (Work -- 19. SPECIAL SITUATIONS -- Conferences -- Kentucky and Tennessee)

Hope that helps.

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