HomeMDB Attribute is Null Error

My Exchange 2013 server's event log is getting flooded with the following errors:
Microsoft Exchange Information Store service has encountered a permanent error while reading information from Active Directory. Details:

Microsoft.Exchange.Server.Storage.DirectoryServices.DirectoryInfoCorruptException: ErrorCode: ADPropertyError, LID: 42424 - HomeMDB attribute is null for recipient 5f33a824-f593-4f32-9836-61de18856ffc
LID: 42424
Correlation ID: 00000000-0000-0000-0000-000000000000
Build Number: 15.0.775.38
Mailbox GUID: 5f33a824-f593-4f32-9836-61de18856ffc
Database GUID: 76ea3083-00d8-49e5-8344-b99068c6ab76
Operation source: MailboxMaintenance
Client Type: Maintenance
Hash Code: 1916608915
AdminMethod: EcAdminExecuteTask50
Logged on User Identity: 00000000-0000-0000-0000-000000000000
Logged on User SID: S-1-5-18

Microsoft Exchange Information Store service has encountered a permanent error while reading information from Active Directory. Details:

Microsoft.Exchange.Server.Storage.DirectoryServices.DirectoryInfoCorruptException: ErrorCode: ADPropertyError, LID: 42424 - HomeMDB attribute is null for recipient 5f33a824-f593-4f32-9836-61de18856ffc
LID: 42424
Correlation ID: 00000000-0000-0000-0000-000000000000
Build Number: 15.0.775.38
Mailbox GUID: 5f33a824-f593-4f32-9836-61de18856ffc
Database GUID: 76ea3083-00d8-49e5-8344-b99068c6ab76
Operation source: MailboxMaintenance
Client Type: Maintenance
Hash Code: 1916608915
AdminMethod: EcAdminExecuteTask50
Logged on User Identity: 00000000-0000-0000-0000-000000000000
Logged on User SID: S-1-5-18

The Exchange server is currently only hosting mailboxes for a single trusted forest.

I also want to add that we have a MS Lync server that hosts Lync accounts the same users in the trusted forest. When trying to add the Lync account
ts, it was recommended I install the Lync resource kit on the server and run the "SIDmap.wsf" script so that the linked mailboxes worked. Could this have caused the problem?
AdesteAsked:
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jrhelgesonCommented:
When did these errors start? I'm trying to determine if this is an AD problem/corruption, or if it is a configuration problem.

Tell me more about your environment, such as how many domains, forest info, xForest & xDomain trusts, how many domain controllers, which one holds FSMO roles, etc.

Also, Is there a user account that is *not* getting that error message?
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