Although the exact error messages that pop up might vary slightly, they will all include the 550 error code. As a consequence, users can’t send emails to specific recipients with their client software. Error 550 is the SMTP (Simple Mail Transfer Protocol) error for sending emails. The SMTP server hasn’t sent the email when error 550 arises as the recipient’s mailbox isn’t available.

What causes the email error 550?

That can be due to a few things, and in some cases, it might actually be an issue that the intended recipient, not the sender, can fix. It may be that your email client is not configured properly or a more zealous firewall blocks it. However, the most simple cause for this error is that you entered the wrong email address. This problem may also occur if the recipient cannot receive your email for some reason or he blocked your domain.

How can I fix the email error 550?

1. Check for email address typos

Error 550 can arise due to email typos. So, double-check you’ve entered the exact email address. Make sure there are no typos, strange characters, or spaces in the email address before clicking the send button. Although not likely, the recipient’s server might be down when an email is sent. So, try waiting a few minutes or hours, then try sending the email again.

2. Is the Email IP Blacklisted?

If the blacklist check highlights that an anti-spam filter has blacklisted the email IP address entered, that’s why you can’t send the messages. Try sending the message with an alternative email address if you can. In case you don’t have another email address, set up a new webmail account at Yahoo, Gmail, etc. in just a couple of minutes.

3. Enable SMTP authentication

How can I prevent the email error 550?

Although this occurrence is not pretty predictable and it’s hard to pinpoint its exact cause, there are some things you can do to prevent this from happening. ➡ Use anti-spam filters One cause for this problem might be that your email client is infected and it sends out spam messages to all your contacts. SPONSORED Using anti-spam filters from a strong antivirus can save you from this ever happening. In fact, it will improve the overall security of your PC and data so it’s a good idea any way you put it. ➡ Change the email sending frequency Sending too many emails in a short timespan can make servers believe you’re a spammer trying to clog the network and that will also get your email blocked. So if you’re sending more than 50 emails an hour, slow down a little bit and you won’t get in any trouble. ➡ Change your password frequently The spammer scenario happens because you probably have a weaker password that got highjacked by wrongdoers. Changing your password often and selecting a more complicated key will solve this problem and prevent any such problems. Those resolutions will fix the email error 500. However, the intended email recipients might also be able to fix the issue by turning off their antivirus software firewalls or emptying their inboxes. So, if your email is blocked by the recipient side, the only solution is to contact the person using another communication method to fix the issue. If you can’t make your email client work, you may also consider the best email clients for Windows and pick a better solution. For any suggestions or other solutions we might have overlooked, write us a line in the comments section and we will get back to you.

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