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Can I Use the Message & SMS Service in Other Cloud Services (Such as Cloudsite Service) If Another Account Has Enabled the Message & SMS Service? You can use the Message & SMS service in other cloud services if another account has enabled the Message & SMS service. Follow instructs
Can the SMS API Be Called by an Internal Network (For Example, an ECS Server)? No. The SMS API cannot be called by an internal network. If you are using a HUAWEI CLOUD ECS, apply for an EIP to access the SMS service through the public network. Parent topic: Secondary Development