Related Posts
Read Time:6 minutes
Sending an email through an Exchange Server or any other email server involves a sender, a medium, and a receiver. Any issue or fault within the three can interrupt the correct flow of email messages. A common error you may get due to a disruption in email flow is the Exchange 400 4.4.7 message delayed error message.
You generally get this error when the recipient’s email server is unable to receive the email at the current time. Such a situation can happen due to various reasons. In this blog, we will see why you are getting the delayed Exchange message issue, how to fix it with various manual methods, and, if required, will use a third-party Exchange data recovery tool.
Exchange Server holds many components. Any issue within a component that is important for email delivery can stop the delivery process. The top reasons for getting the message delay in Exchange error include:
Email servers have a limited pool of resources, and a sudden surge in email send/receive requests might cause the server to fail in sending the emails. To avoid such a situation, users often migrate from Exchange on-premises to Office 365.
In Exchange Server, MX records contain the email address of the recipients. Any incorrect entry or configuration can result in emails being undelivered.
In Exchange 2010 and later versions, admins can limit the resource utilization for a particular user. If a user consumes high resources, then the server will temporarily block him. Situations like these can also lead to 400 4.4.7 message delayed errors.
The transport service in Exchange manages the complete email flow. If the Exchange transport service won’t start properly, it can temporarily or completely break down the message delivery system.
The problem could be on the destination server. Ask the recipients to check their server configuration. Also, verify if you are not blocked on the recipient’s server. Absence of a network or a slow internet bandwidth can also be the culprit.
These are the general reasons behind the error. For more insights into the cause of the error, try the Exchange message tracking tool. This tool helps to track the complete journey of an email.
Let’s explore the solutions to troubleshoot mail flow issues in your Exchange Server.
Restart your server’s transport services. If any previous operation is preventing the transport service from executing correctly, a simple service restart request may fix it.
Use the following command to restart the transport service:
Additionally, you can try to restart the complete server to remove any internal hardware issue or software glitch that might be causing the issue.
The MX records and SPF records are very vital components for correct email delivery. They help in identifying, authenticate, and deliver an email to the required destination email address. Incorrect data in these records will disable the email server’s ability to send email messages to the right mail server.
To check the MX records for your Exchange Server, use the following steps:
Step 1: Open the command prompt as administrator, type nslookup, and press Enter.
Step 2: Input set type= MX and press Enter again.
Step 3: Provide the recipient’s domain name and press Enter.
This will show you the present MX records. Check if they are correct. If found an incorrect record, fix it. Restart the transport service and try sending the emails again.
Exchange allows you to view the email queue. To access the list of emails currently under the process of incoming or outgoing, open the Exchange Toolbox and click on Queue Viewer. If you find the queue to be stuck, then rebuild the transport queue database with the following steps:
Step 1: Stop the Exchange transport service temporarily.
Step 2: Navigate to C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\data\Queue.
Step 3: Rename the Queue folder to Queue.old.
Step 4: Start the Exchange transport service again to create a new queue database.
Step 5: Try to send the email again to see if the issue is resolved.
Correcting the DNS records, checking the services, and other manual methods will work only for that specific situation. These methods won’t work for a more severe scenario like EDB file corruption. You can check and repair EDB files for minor issues using Eseutil tool.
However, the Eseutil tool often causes permanent data loss. To remove corruption from EDB file without any data loss, use a third-party Exchange recovery tool like Kernel for Exchange Server. It’s a robust tool with powerful features like:
It’s a standalone solution for all your EDB problems. You can easily repair, view, and migrate EDB to Live Exchange from the tool with just a few clicks.
Exchange 400 4.4.7 message delayed error is usually a temporary situation and will be resolved automatically. If that is not the case, use the methods we discussed above to reestablish the correct flow of emails.
However, for a corrupt EDB file, it’s important to choose a reliable tool to recover complete user mailbox files & folders. For a hassle-free repair, use the Kernel’s Exchange data recovery tool.
Ans. The 400 4.4.7 error message in Exchange occurs when the sender sends an email to a recipient, but the server fails to deliver it to the destination. High server load, internet issues, transport service not working, etc., are the primary reasons for this problem.
Ans. To resolve the message delay issue in Exchange, try the following troubleshoots:
1. Restart the transport service or the complete server.
2. Verify if correct DNS records are present. Update them if any mismatch is found.
3. Check system resources and Workload management rules.
4. Create a new email queue database if the email queue is stuck.
Ans. You can export any user mailbox from Exchange in three ways:
1. Navigate to the Exchange Admin Center (EAC), select and export the mailbox to PST.
2. Open the Exchange Management Shell (EMS) and use the New-MailboxExportRequest cmdlet.
3. To quickly save multiple mailboxes at once, use an EDB to PST converter tool.
