Despite Yahoo is one of the best email service providers, you may come across various problems like Error 550 Mailbox Unavailable. Basically, this error refers to the SMTP error codes due to which outgoing mails of a user are not delivered to the recipient. Here, in this article, we will discuss how to resolve Yahoo Error 550.
Reasons behind Yahoo mail Error 550
- In case, if you have tried to send emails to an invalid email address, then you will face this issue.
- If your IP address is blocked, you can encounter this error.
- Sometimes, failing authentication checks of your email against the sending Domain’s DKIM or Domain Keys policy causes this issue to occur.
- You can also face this error due to declination of your SMTP connection.
- If the content of your email is restricted as per Yahoo policy, it results into failing of message sending.
Steps to Avoid and Resolve the Yahoo Error Code 550
In order to deal with the Error 550 Mailbox Unavailable, you need to be an administrator of the server. In case, if the error appears constantly for more than 48 hours, then that means you have already given enough time to get the error fixed. Now, you need to carry out the corrective measure while sending email through your Yahoo Mail account. You can follow the steps given below: –
- First of all, make sure that you have a good reputation of email sending. According to your sending reputation, Yahoo reviews IPs submitted for delivery issues and accordingly they may alter your status in their system.
- You need to fill a new sender application to discuss your issues.
- You need to ensure that your email server is not abusing by the spammers.
- In case, if you are using a shared IP address and sending mails from other domains, then also your IP sending reputation may be marked negative.
- In order to avoid objectionable content or practices, make sure to consider following while reviewing your outgoing emails: –
- IP address reputation
- URL reputation
- Sender reputation
- Domain reputation
- Domain Keys identified Mail (DKIM) signatures.
- Domain-based Message Authentication, Reporting & Conformance (DMARC) authentication.
How can you improve your Sender Reputation?
In order to build a good sender reputation, you may consider following measures and avoid errors.
- Follow the best practices for sending bulk emails.
- You can apply for new sender status if you are a bulk email provider.
- You need to review SMTP error table (on official website).
- You have to make sure that your emails meet industry authentication standards.
- Review Yahoo terms for information on policies and follow them.
By following the steps give above, you can easily fix the Yahoo Mail Error 550. However, if you are still detecting the same issue, then you can talk to human at yahoo.
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