如果开了调试，调试进去会看到错误提示：
smtp_code:"stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:\nerror:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed"smtp_code:"stream_sock
阅读背景：
phpmailer发送邮件出现错误：stream_socket_enable_crypto(): SSL operation failed with code 1._折戟♂沉沙。
来源：互联网
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