Quick Fix: How to Effectively Resolve the 400 4.4.7 Message Delayed Issue

Published On - October 23, 2024 by Nasir Khan | Reading Time: 4 minutes

Exchange Server is a go-to email platform for many businesses, helping teams stay connected and collaborate effectively. But like any piece of software, it can hit some bumps along the way, which can disrupt your email flow. One such hiccup you might run into is the “Server Returned 400 4.4.7 Message Delayed” error.

In this article, we’ll break down what causes this error and walk you through some straightforward steps to fix it. But before we dive in, it’s really important to take a moment to back up your EDB files using the Regain EDB to PST Converter. Trust me, the methods we’ll discuss can get a bit technical, and one wrong move might lead to losing valuable data. Having a backup means you can tackle the problem without worrying about your important emails.

Understanding the Microsoft Exchange Error 400 4.4.7

When you see the “Server Returned 400 4.4.7 Message Delayed” error, it means your email is having a tough time getting through to the Exchange Server. Basically, the server can’t handle your message right now, so it’s keeping it on hold for a while. There could be a few reasons for this. Maybe the network is acting up, or some settings on the server are a bit off. It’s also possible there’s a problem with the recipient’s email address. I totally get that this can be frustrating. Just remember you’re not alone in this. Lots of people run into similar issues now and then.

What are the Common Causes of Error 400 4.4.7 Message Delayed Issue?

The Microsoft Error 400 4.4.7 can pop up for a bunch of reasons. To fix it easily, it helps to know what might be causing the problem. Let’s break down some of the most common culprits behind this error.

• Network Connectivity Issues: Now and then, the network can act up. When this happens, it can make sending or receiving emails a real hassle and cause annoying delays.
• Recipient Address Problems: If you accidentally type the wrong email address or the one you’re sending to doesn’t exist, your message simply isn’t going to get there.
• DNS Resolution Issues: Sometimes, if the server can’t figure out where the recipient’s domain is, it’s like sending your email into a black hole—nothing happens and your email just disappears.
• Server Configuration Issues: If the settings on the Exchange Server aren’t quite right, it can really throw a wrench in your email delivery and cause all sorts of frustration.
• Overloaded Exchange Server: Think of it like rush hour traffic. If too many emails are flying around or if the server is low on resources, everything slows down, and your emails can get stuck in the queue.
• Third-party Security Software: While firewalls and antivirus programs are essential for keeping things safe, they can sometimes be a bit too protective and end up blocking or delaying your emails from getting through.
• Exchange Transport Service Issues: If the transport service isn’t working right, it’s like a delivery truck that’s broken down—it can’t get your messages to where they need to go.

Best Method to Resolve the 400 4.4.7 Message Delayed Issue

Before performing any resolution steps to fix the 400 4.4.7 error, it is necessary to understand the problem. There is a high chance that the issue is related to a specific external domain. Moreover, this problem can also be caused by an issue in a single mailbox. Before moving further, use the nslookup command to check the records of the external domains. The steps are as follows:

1. Launch the command prompt on your system with administrative privileges. Now, type nslookup and click on the Enter button to view the details.
2. After verifying the details type set type = MX. Then, click on the Enter button.
3. Now, enter the Domain Name of the Recipient.

This shows the MX records needed to connect to the domain.

If you see “can’t find : Non-existent domain,” the MX record isn’t available for that domain. This points to an issue with the local DNS, forwarding DNS, or destination DNS. When that happens, try sending a test email from an outside source to check if it works. Also, check if any emails are stuck in the queue by opening the Exchange Toolbox management console. The steps are as follows:

1. Open Exchange Toolbox Management Console and then click on the Queue Viewer option.
2. This will display the number of all the incoming and outgoing emails through the Exchange Server.

You can check for issues with storage, server performance, or any underperformance caused by software or hardware problems. To do this, use the Resource Monitor and Event Viewer. The steps to pinpoint the problem are as follows:

1. Run the Get-MessageTrackingLog command.
2. If there is any error then there is a high chance that you might encounter the error message mentioned below:
   ServerHostname : MailServer
   SourceContext : No suitable shadow servers
   ConnectorId :
   Source : SMTP
   EventId : HAREDIRECTFAIL
3. There might be an issue with Shadow Redundancy on the standalone Exchange Server. You can disable Shadow Redundancy by running the following command in the Exchange Management Shell (EMS).
   Set-TransportConfig -ShadowRedundancyEnabled $False
4. Once the command is successfully executed, you can restart the transport service.
   net stop MSExchangeTransport && net start MSExchangeTransport

After following the steps mentioned above we highly recommend the users to restart the system and check whether the issue is resolved.

Unable to Resolve the Error Message “Server Returned 400 4.4.7 Message Delayed”

Just like in real life, we try many solutions to our problems, but not every solution guarantees that it will fix the issue. Similarly, if none of the solutions are helping you, we suggest seeking the help of a professional. In the meantime, we strongly recommend creating a secure backup on your system. You can do this using the Regain EDB to PST Converter. This tool allows you to convert your EDB files to PST, PDF, and other popular file formats. Additionally, it offers useful features and filters. We suggest creating a backup to safeguard your data in case of any corruption.

Free Download100% Secure Buy NowPrice: $89

The steps to back up EDB files are as follows:

1. Install and launch the EDB to PST Converter on your system.
2. Click on the Open button to add the EDB files to the wizard.
3. Initiate the scanning and then select the Desired Files/Folders from the tree structure.
4. Now, click on the Export button and select the desired saving format.
5. Finally, opt for the optional features and filters and then click on the button Start Backup Process to initiate the backup process.

Conclusion

Exchange Server users may find themselves annoyed by the “Server Returned 400 4.4.7 Message Delayed” error message which can cause interruptions to email links. Nevertheless, such an issue is not an issue at all, as it is possible to resolve it by analyzing the various reasons behind the occurrence of such issues. In particular, the network connections, the correctness of recipient addresses, the parameters of the servers used, and their load. Familiarity with the potential reasons, as well as their fixes, will allow for the normal functioning of email. In conclusion, always perform a backup of EDB files before any major changes are made to the EDB files.