Unable to send destination forum verification code.

Whether in daily life or at work, we often encounter verification code SMS, which seems to have become a standard in all walks of life. For example, when you register an account, log in an account or change your password, you will use verification code SMS. For example, when you change your mobile phone and log in to WeChat, qq, Alipay and other apps on your mobile phone again, the other party asks to enter the SMS verification code for confirmation, which plays an important role in personal data protection. At present, the SMS service of the third-party SMS verification code platform is accessed through the SMS verification code interface. More than 99% of users can basically receive the verification code in a few seconds, but occasionally they can't. What is the reason why I can't receive the verification code SMS?

On this issue, we mainly think from four aspects; Enterprises themselves, operators, users themselves, third-party SMS verification code platform, the following small series will answer you one by one.

1. Enterprise's own reasons

① There are forbidden words in the short message of verification code, which could not be sent.

② The short message signature format of the verification code is incorrect, or inconsistent with the signature submitted for filing, and the distribution failed.

③ The collection times are beyond the set range. Why should I set the number of times to get the verification code? Wouldn't it be better for users to take it as many times as they want? Actually, it is not. In order to prevent being swiped, we usually set the number of times to get the verification code of each number every day. For example, the same mobile phone number can be obtained up to 5 times a day, up to 3 times an hour, and the effective time is 3-5 minutes. If the limit is exceeded, the delivery fails.

2. Operator reasons

This reason accounts for a small proportion, but it is not impossible. What happens is that few packets are lost.

3. User's own reasons

① The user's mobile phone number is blocked, and it is impossible to receive the verification code SMS → Call the operator's customer service phone to solve the problem.

② Users are in places with weak signals, such as basements, or places where network signals are blocked.

③ The user's mobile phone is in arrears, turned off or even stopped.

④ There is interception software in the user's mobile phone, and the short message of verification code is intercepted.

⑤ The user has set a blacklist.

4. Third-party SMS verification code platform reasons

① The sms channel provided is not a direct channel for SMS operators, so SMS with verification code will be delayed or even unable to be sent.

(2) There is no backup in sms channel, and there is no backup when the main channel is unstable, which is easy to fail.

③ The third-party SMS verification code platform interface is unstable, and the technology does not support high concurrency. When users visit a lot, it is easy to have system crashes and system errors, leading to the failure of distribution.

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How much do you know about the common reasons for the failure of sending SMS interface? _ Aimei Aimei's blog

How much do you know about the common reasons for the failure of sending SMS interface? Recently, we released the Anti-attack Strategy of SMS Verification Code and How do enterprises ensure the security of SMS data? In order to popularize some common problems in the process of information service for enterprise users, I hope to provide technical and operational ideas for enterprise customers from a professional perspective and try to avoid these problems.

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