Http 503 on convert call

We get an error connecting from Salesforce.
If I get this message I try it from Postman and there it always succeeds so far.
Then retrying in Salesforce and works again.
The request we do is: https://api.aspose.cloud/v3.0/cells/convert/json
clientid: c9b3ac34-26a6-4b50-8d36-38a21363b618

HTTP Request failed with status code 503:

ERR_CONNECT_FAIL

The remote host or network may be down or blocking requests from publicproxy. Please verify acls at the origin api.aspose.cloud(74.113.210.20)

  • Check with destination team if they have implemented some allow-listing mechanism. Note: If destination endpoint is hosted on ingress gateway ( #managed-mesh-support ) can guide if they are blocking requests.
  • In case of no issues at destination team, check the destination firewall/security groups for access. Reach out to #soter-support for assistance
  • Reach out to the slack channel #outbound_access if the issue persists

aws-prod16-eunorth1/core1
client: (CONNECT) → (proxy) -X-> api.aspose.cloud(74.113.210.20:443)
Details:

Plain Text

[unknown]

error: (110) Connection timed out
[No Error Detail]

@akoops Hello, we checked your calls and found that some of them had incorrect authorization information, which resulted in failure to return correctly. Other calls returned normally and no 503 error message was found. It may be caused by network fluctuations. If you still encounter this problem later, you can provide the detailed call time and we will help you check and handle it.