Error 455: Suspicious activity detected!
Account temporarily blocked from sending messages!
Your Yahoo account is blocked now; you are barred to access it for next few minutes to hours. The temporary error usually restricts users to access their accounts in order to keep the account safe and secure. This is really helpful when some hacker attacks your account or gets it access; but the suspicious activities will make it difficult for hackers. Before, it creates more damage; your account will be freeze to access for up to next 12 hours.
Yet, we need to understand that the reasons, we are unable to get access to own accounts. There are many possibilities, so we are discussing the most common reasons and possible causes. When you are unintentionally sending lot many messages or emails in a single run; it will a suspicious activity according to the Yahoo security definition. In fact, when you are sending duplicate information in your mail or when you are sending one or more emails to a large number of recipients with your Yahoo account.
This error can also bother you when you are using it on your Yahoo Mail app. You will get this error when you try to send an email using your Yahoo Mail app and it gets failed for any reason. It will be diverted to your Outbox folder; it will be there due to any reason. Yahoo will notify you of the message and attachments exceeding the size limit with your mail, you need to respect it and fix it.
Well, if you talk about the solution for this error, we would recommend you to take the precautions rather facing this error. You need to make sure that you are using the Yahoo account for sending bulk mail, avoid it or make sure don’t to send more emails in a single time frame.
You can also try after signing in and out from your Yahoo mail account and sign in again after clearing the cache and browser history. This is really effective for temporary errors. Signing in after clearing cache and browsing history will fix the error, yet make sure not to send bulk mail or mass mailing.
When you are sure that you haven’t sent bulk emails, still your account got this temporary error, you need to be a little careful here. There could be some suspicious activity or hacking attempt on your account. Here, you need to sign in with help of Yahoo Sign In Helper and get into your account; change the password and update the account settings with a new one. We recommend here a better security with Yahoo Account Key or 2-Step Verification with your account.
Still facing issue while using Yahoo mail account so you can call Yahoo customer support service helpline number to get instant help on Yahoo Mail account.