Hi everyone, Is there perhaps a Mimecast rep on the list? We're seeing increased temp rejections from Mimecast across 3 geographically separated email clusters ie. many different mail servers and IP ranges. The message in the logs is the generic temp reject: 451 Internal resource temporarily unavailable
We don't have any issues with any of the other 'big' providers currently and our IP reputation seems to be okay. This is causing email delays for our customers who send to Mimecast hosted addresses. Anyone else seeing the same issue? Or, can offer some advice? Thanks! Stephan
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