I recently installed Sophos XG 125/ w125 on our network. After installation I have been receiving the “Certificated is not valid” error when trying to open the outlook application. I am using Exchange 2010 and previously when I was using TMG I did not experience such an issue. So I was hoping you could assist me with this issue. I have tried all possible ways listed in the knowledge base but non seem to work. Also all my android devices and ios devices are no longer able to sync emails. The full error is listed in the document attached
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