antispam agents are disabled but an email goes to junk folder only for one mailbox

Hi!

I’m running Exchange 2013 CU9 and have disabled all native antispam features:

get-TransportService | FL AntispamAgentsEnabled
AntispamAgentsEnabled : False

get-ContentFilterConfig | FL Enabled
Enabled : False

There is only one user who catches a specific email to outlook junk folder.  The other users receive this email to inbox folder.
Since antispam is disabled there are no SCL headers in emails.

Also get-MailboxJunkEmailConfiguration  doesn’t  show the sender is blocked or trusted for any of mailboxes.

RunspaceId               : a170ede8-2d05-4eea-b6ad-94f8e41e8a4f
Enabled                  : True
TrustedListsOnly         : False
ContactsTrusted          : False
TrustedSendersAndDomains : {}
BlockedSendersAndDomains : {}
IsValid                  : True
ObjectState              : Unchanged

All users run outlook 2010sp2, but I believe outlook is not the point because this is server side feature.

I can’t figure out why only one mailbox handles this particular email like a junk?