Right after Summer 2016 holidays we started receiving user complains about monthly data plan being consumed in a couple of days by the email app of windows 10 mobile.
A search on the frontend log revealed lots of requests from the same IP in the form
Code:
[15/Sep/2016:10:58:02 +0200] "POST /Microsoft-Server-ActiveSync?eQAQBBAbzrxxWDOFz69NOQuo7CxoBAAAAAADV1A4 HTTP/1.1" 200 35342 "-" "-"
Anyway, is anyone else observing this huge amount of traffic with similar POST requests? We've got users reaching 2 GB/day of endless sync, because looking at their usmsession the system just keep trying to sync old mails.