How do I fix Error 553?

How do I fix Error 553?

553 mail rejected because your IP is in the PBL This error message indicates that your public IP address has been put on a block list by the Spamhaus PBL block list. To resolve this issue, please request to have your IP removed at:http://www.spamhaus.org/pbl/.

How do I fix Error 553 in Outlook?

Troubleshooting Error 553 Many mail servers, including our own mail servers, require SMTP authentication to properly relay emails. To fix this, you just need to enable it. Start by opening the properties on your local email client.

What is sender callout?

Sender callouts were introduced as a feature in the mail server to arrest inbound spamming. This technique is used to validate sender’s email addresses for incoming mails. If the sending mail server acknowledges this command, then the receiver knows that the sending email address is valid.

What does server Error 550 relay not permitted mean?

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.

What is 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.

What is SMTP callback verification?

Callback verification, also known as callout verification or Sender Address Verification, is a technique used by SMTP software in order to validate e-mail addresses. The most common target of verification is the sender address from the message envelope (the address specified during the SMTP dialogue as “MAIL FROM”).

How do I fix 550 relay not permitted Gmail?

How to fix this problem:

1. Refer to our visual step-by-step troubleshooting guide for your specific mail client.
2. Follow the settings to access the Outgoing SMTP server.
3. Choose the option to require authentication using a password.
4. Use the same user name and password for both the incoming and outgoing servers.