What does email error 550 mean?
Authentication is required for
A “550 Authentication is required for relay” error indicates that your email server requires SMTP authentication in order to send outgoing mail, but the email client used to send email has not been authenticated with your username and password. Fortunately, resolving this error can be done quickly and easily.
How do I fix SMTP 550 error?
How do I fix a 550 error?
- Check for email address typos.
- Check whether the email IP is blacklisted.
- Try sending the email after some time.
- Try changing your outgoing mail port.
- Check whether IP filtering is enabled.
- Enable SMTP authentication.
- Troubleshoot the SSL method.
- Contact your ISP.
How do I fix 550 high risk of spam in Gmail?
Common Solutions To This Error
- Limit The Number of Emails Sent Per Hour/Per Day.
- Ensure The Contents Of Your Email Don’t Read As Spam.
- Verify That Your DNS Security Settings Are Properly Setup.
How do you fix 550 this message was classified as spam and may not be delivered?
This is commonly caused by not having SMTP Authentication enabled in the Outlook. You need to make sure SMTP authentication is enabled in Outlook and the username is your full email address along with the password for your email account. Note: Our outbound spam filters cannot be modified!
What is a 550 permanent failure?
550 Permanent failure blocked email issue is one of the most common errors hosting users may encounter. When the recipient’s email hosting server blocks your IP. The email address of the recipient is not found or doesn’t exist. The recipient’s email inbox is full and can’t receive any more messages.
What is a 550 blocked?
550 Blocked error or 550 Requested action not taken: mailbox unavailable is an SMTP (Simple Mail Transfer Protocol) error code. Put simply, this message means that the email you sent was blocked by the recipient’s email hosting server, and returned to you.
How do I fix 550 relaying denied?
It’s likely that the email server isn’t correctly set up to receive and relay messages from your organization. To fix this issue, forward this non-delivery report (NDR) to your email admin. The sender’s message was routed to an email server outside Microsoft 365 that returned an error that it can’t relay the message.
What does 550 too many invalid recipients mean?
The error, which is displayed as Error 550 Too many invalid recipients occurs when you attempt to send a message to multiple users or email addresses, that are no longer valid, from Outlook, and eventually, the message doesn’t get to the intended recipients.
How do I turn on SMTP authentication in Outlook?
Outlook 2013 and 2016
- Open your Outlook account.
- From the Tools menu, choose Account Settings.
- Select your email account from the list, then click Change.
- On the Change E-mail Settings window, click More Settings.
- Click the Outgoing Server tab, then check the My outgoing server (SMTP) requires authentication option.
What does this error mean 550 permanent failure for one or more recipients?
Why are my emails being rejected?
The server was down. The message was too large for the recipient’s inbox. The recipient’s inbox was full. The recipient’s settings do not allow for email from the sender.
What is the 550 rule?
What does error 550-5 mean in Gmail?
Recommended Answer Relevant Answer KeithR, I have error 550-5.7.1 (not 554 5.7.1): 550-5.7.1 Our system has detected that this message is likely unsolicited mail. To reduce the amount of spam sent to Gmail, this message has been blocked.
Why is my message not reaching the recipient?
Typically, this error indicates a security setting in your organization or the recipient’s organization is preventing your message from reaching the recipient. For example: You don’t have permission to send to the recipient.
Why can’t I send to the recipient of a group email?
The recipient is a group, and you don’t have permission to send to the group or one of its subgroups. You don’t have permission to send email through an email server that’s between you and the recipient.
How do I check the sender and recipient domains for incorrect records?
Check the sender and recipient domains for incorrect or stale MX records by using the Advanced diagnostics > Exchange Online test in the Microsoft Support and Recovery Assistant. For more information about the Support and Recovery Assistant, see About the Microsoft Support and Recovery Assistant.