406-Not acceptable error while testing external IOC feed in VSX environment

[mahesh]

Getting 406-Not acceptable error while testing external IOC feed in VSX environment. Screenshot attached.

Usually 406 errors means server is unable to accept client's request. Does this mean it is an issue with the server where the feed is hosted ?

We are able to get the ip's when we try the same url in browser and curl connectivity also works fine.

We are using the same feed in Palo Alto firewall and it works fine over there.

Also, I got to know from below sk that vsx gateways are not supported but there is a confusion whether it indicates TOR list or IOC feed.

https://support.checkpoint.com/results/sk/sk103154

Tried custom csv file and able to block the ip's successfully.

Can someone assist here ?

Thanks in advance.