Yahoo email administration is without a doubt one of the exceptionally well known ones that individuals overall use. Throughout the long term, it has obtained a dependable base of clients. Notwithstanding, even the most proficient email administration isn't ensured to flawlessly work constantly. The equivalent is the situation with this help. Hurray Mail Error 550 is a blunder code that its clients much of the time face. This article is for you if you, as well, experience a similar blunder and are frantically looking for viable fixes.

Here, you'll find everything from what this mistake code implies, the causes behind it, and ways of settling it.

What Does Yahoo Mail Error 550 Mailbox Unavailable Mean?

This mistake code comes in the class of SMTP blunder codes. It happens when the particular beneficiaries don't get the active messages that a Yahoo client has sent. Note that when you experience the Yahoo Mail blunder code 550, you ought to cease from sending additional messages.

Doing so can lead to severe consequences. It can also permanently damage your mailbox.

What Causes the Yahoo Mail Error 550?

There are quite a lot of causes behind this error. They consist of the following.

1. The email in which you are sending the message does not exist.
2. The recipient’s mail server is identifying your email as spam.
3. Your domain name is blocked or invalid.
4. You have a compromised email address. So, the recipient’s mail server is blocking it.
5. The recipient’s mail server isn’t able to recognize your email address.
6. You are using the Yahoo Mail service from another IP address.
7. The hosting server or email address of the recipient is temporarily unavailable.
8. Your internet gateway has a filtering feature or a Firewall that’s regarding your email as spam and blocking it.

How to Identify the Yahoo Mail Error 550 Mailbox Unavailable?

There are many signs of this error code. If you face the following symptoms, you must be ready to troubleshoot error code 550.

1. You cannot access your mail account.
2. You cannot send mail messages to your recipient.
3. All your emails become spam messages.
4. You will constantly find error information on your screen.

How to Troubleshoot the Yahoo Mail Error 550?

Now that you know much about the Yahoo mailbox unavailable error in a bit more detail, you can proceed to troubleshoot it. Check out the various fixes below and start using them to overcome this error.

1. Look for Email Address Typing Errors

Often, typos while writing an email address can cause this error. So, the simple solution to fix it is to find if the email ID you’ve entered is accurate. Look for extra spaces and spelling mistakes.

Additionally, ask the recipient to text you their email address. That way, you can be sure that what you are typing is correct.

2. Look If the Email IP is Blacklisted

You will definitely face this error message if your email IP is blacklisted. In simple words, it means that a person has taken advantage of the webmail and is uploading a spam script to it. It also means that a hacker has accessed your account and is sending spam to everyone.

You must locate the database and find why your email ID is blacklisted. Then remove it from the blacklist.

3. Change the Outgoing Mail Port

Does your Yahoo Mail employ port 25 as an outgoing mail server port? This port is often used by spammers. So, servers can block your email, which can result in you seeing the error 550 Yahoo Mail.

In such a case, you can alter the outgoing mail port number to 465, 587, or 26.

4. Switch on SMTP Authentication

If the SMTP authentication in your Yahoo email application isn’t configured, you cannot send messages. So, to set it manually in Mozilla Thunderbird, follow these points:

1. Tap ‘Tools’ and choose ‘Settings’ from the top menu.
2. Choose ‘Outgoing Server (SMTP)’ below ‘Settings’ and tap ‘Edit.’
3. Now select the SMTP server you want to configure and hit ‘Edit.’
4. Check your username and password and hit ‘OK.’

5. Examine If IP Filtering is Enabled

The Yahoo Mail blunder 550 may likewise happen in the event that your SMTP server is designed to approved clients from a specific IP address set. It will frustrate you from sending email messages from another area. You can rapidly investigate this issue by associating with your mail server administrator.

6. Fix the SSL Method

Many email clients like Yahoo have an auto-distinguish usefulness to arrange SMTP. While designing it physically, there can be different blends of SSL, as SSL/TLS, START TLS, and None.

So you want to confirm the SSL technique that your SMTP server utilizes during the manual arrangement and afterward design the email client.

Summing Up

Presently, you are outfitted with every one of the actions to fix the Yahoo Mail blunder 550. Their application will assist you with settling this issue in almost no time. Nonetheless, assume the issue continues, or you need a moment fix. All things considered, it's ideal to associate with proficient Yahoo support administrations. They work over the course of the day and proposition significant help.

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