Token not coming on notifier_url

I m making a request to Access Token Request for User and already have notifier url.While making request i get success response but i m not receiving the token on the hook url.Firewall on domain/server is open. i have checked the url also gets data if send through some other means.
Kindly help.

@PARAS_37112628 Can you provide your 6-digit UCC for further investigation?

@Anand_Sajankar
This is the UCC
6QA9D9

@PARAS_37112628 It seems this is a newly registered domain that our firewalls have flagged as suspicious and blocking. I’ll escalate this to our security team to check if the URL can be whitelisted.

Thanks!

@Anand_Sajankar thanks.. really appreciate the response. kindly try to get it whitelisted the earliest it can be

@PARAS_37112628 This has been done. Please review and confirm.