troubleshooting Question

External DNS overload

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bergertime asked on
21 Comments2 Solutions181 ViewsLast Modified:
I've used DYNDNS for our external DNS for several years.  We've been on the 5 qps the whole time.  It has suddenly shot up to over 200 qps in the last two months.  I had them run a report which shows the traffic coming from google addresses, DYNDNS says it is email related.  Nothing on my end has changed.  Any suggestions what I should look for?  It's going to raise my rates from 50/month to 2000/month.  We host our email with Office 365.  Any ideas?
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