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by hfern 2607 days ago
You may be hitting ec2 dns rate limits.
1 comments

I would expect EAI_FAIL or EAI_AGAIN, but I'm pretty sure we're getting EAI_NONAME.

But, the stuff that hits this problem the most often is of the quality level that I wouldn't find that terribly surprising. Seems AWS "documents" this as,

> The number of DNS queries per second supported by the Amazon-provided DNS server varies by the type of query, the size of response, and the protocol in use.

How specific.