Could not resolve host: api-content.dropbox.com

[skuppuraj]

I am frequently getting this error while uploading file to drop box.This issue is occur only in shared server, dedicated server working fine. I contacted my host they said all are fine. They are reply
We still able to telnet to api-content.dropbox.com on port 80 and 443. You can verify the same with logs given below.

telnet api-content.dropbox.com 80
Trying 45.58.70.36...
Connected to api-content.dropbox.com.

telnet api-content.dropbox.com 443
Trying 45.58.70.36...
Connected to api-content.dropbox.com

My server not support IPV6

I tried all solution from google also I used new content URl (content.dropboxapi.com) same error.I don't how to resolve this . What can I change to my host?.
So can any one please assist to work

Where is that message that says "the server not support ipv6" coming from?

What happens when you nslookup content.dropboxapi.com from your virtual server?

Can you add an alias for the api endpoint on your virtual server?

[skuppuraj]

In my server not support IPV6 because it shared hosting .

When I run nslookup content.dropboxapi.com I got this output

nslookup content.dropboxapi.com
Server: 75.98.161.224
Address: 75.98.161.224#53

Non-authoritative answer:
content.dropboxapi.com canonical name = block-api.dropbox-dns.com.
block-api.dropbox-dns.com canonical name = block-api-iad.dropbox-dns.com.
Name: block-api-iad.dropbox-dns.com
Address: 45.58.70.36

Yeah, but ... that's OK, right? Dropbox isn't IPv6. your server isn't IPv6. so they should have no problem.

I don't think it's the IPv-whatever part which is causing the problem.