Starting Yesterday - Clients who are running Office 2010 (Outlook 2010) are not receiving e-mails from external sources. They are running it with Exchange 2010. Users who are running Office 2016 are not having the problem. iPhones (all smartphones) and OWA are not affected by this problem and they show e-mails with attachments. This problem was first noticed yesterday.
They are running on a SBS 2011 server but (and we always hear this) no changes were made.
So on the problem workstations, OWA works as does the smart phones. If i setup the user on a workstation with Office 2016 the mail is there. The problem happens on both Windows/7 Pro and Windows/10 Pro.
Any insight or help would be appreciated. I would download a trial of Office 2016 but there seems to be none.