What does mailbox unavailable mean?

What does mailbox unavailable mean?

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 test my SMTP mail relay?

Visit the forums at: Exchange Server, Exchange Online, or Exchange Online Protection.

1. Step 1: Install the Telnet Client on your computer.
2. Step 2: Find the FQDN or IP address of the destination SMTP server.
3. Step 3: Use Telnet on Port 25 to test SMTP communication.
4. Step 4: Success and error messages in the Telnet Session.

How do I know if my mail relay is working?

DETAIL

1. From the Windows Start Menu select Start->Run and enter CMD as the application to open. Select OK.
2. At the command prompt, enter the following: telnet mail.mailenable.com 25. The remote mail server should respond with an initiation string similar to the following:
3. Type the word QUIT and then press enter.

How do I fix Relay Access Denied?

How to fix Relay Access Denied Error in Mail.

1. Verify Mail Server Settings and Account Credentials.
2. Enable SMTP User Authentication & Secure Connection.
3. Verify Email Settings with your Email Provider & Scan for Viruses.
4. Check if your Mail Server or your Domain is Listed at SPAM (BLOCK) lists.

What is the error code for mailbox unavailable?

MailBox Unavailable 5.7.1. The server response was: 5.7.1 Unable to relay Please let me know how to fix this. Show activity on this post. 550 5.7.1 Unable to Relay’ code error generally occurs when the user tries to send emails outside his domain. The outgoing mail server could not identify the sender.

What is the server response for unable to relay mailbox?

The server response was: 5.7.1 Unable to relay Mailbox unavailable. The server response was: 5.7.1 Unable to relay the code for sending emails is more or less always the same. It does not really matter if the application is a ASP.Net Web application, a windows Forms application of a windows service. But we need more details what you are trying.

What does ‘unable to relay’ error code mean?

The server response was: 5.7.1 Unable to relay Please let me know how to fix this. Show activity on this post. 550 5.7.1 Unable to Relay’ code error generally occurs when the user tries to send emails outside his domain. The outgoing mail server could not identify the sender.

How to set up relay restrictions for SMTP server?

On General tab, Set IP address of the Web server instead of “All Unassigned”. In Access tab, click on Relay button, this will open Relay Restrictions dialog. In relay computers list, add the loopback IP address i.e 127.0.0.1 and IP address of the Web server, so that they can pass/relay emails through the SMTP server. Show activity on this post.