10 hours ago
高效码农
Comprehensive Diagnosis and Resolution: When Aliyun SMS API (dysmsapi.aliyuncs.com) Is Unreachable in a PHP Environment When integrating Alibaba Cloud’s SMS service (Aliyun SMS API) into your PHP applications, you may occasionally encounter errors such as “message not sent,” “DNS resolution failed,” or “connection timed out.” This article walks you through the environment overview, symptom analysis, rapid troubleshooting steps, detailed root-cause strategies, and full-featured detection scripts—enabling you to pinpoint and remedy any accessibility issues to dysmsapi.aliyuncs.com in a PHP runtime. Written in clear, accessible language for tertiary-educated developers, it preserves technical rigor while remaining easy to follow. 1. Environment and Context …
