Managing Exim Mail Queue: Comprehensive Guide Print

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Managing the Exim mail queue efficiently is crucial for maintaining the health and performance of your mail server. This article will cover various Exim commands to manage, filter, and remove emails from the queue. We will explore different scenarios and use cases, providing you with a comprehensive toolkit for Exim mail queue management.

Introduction to Exim Mail Queue

Exim is a mail transfer agent (MTA) used on Unix-like operating systems. It handles email routing, delivery, and reception. The Exim mail queue is where messages are stored temporarily before being delivered to their destination. Efficient management of the mail queue is essential to ensure smooth email operations.

Basic Commands

List All Messages in the Queue

To list all messages in the mail queue, use:

exim -bp
This command displays a summary of all queued messages.

 

Removing Messages from the Queue

Remove All Messages in the Queue Older Than a Specific Time
To remove messages older than a specific time (e.g., 1200 seconds), use:
exiqgrep -o 1200 -i | xargs exim -Mrm

 

Remove All Messages from a Specific Sender

To remove all messages from a specific sender:
exiqgrep -f sender@example.com -i | xargs exim -Mrm

 

Remove All Messages to a Specific Recipient

To remove all messages to a specific recipient:
exiqgrep -r recipient@example.com -i | xargs exim -Mrm

 

Remove All Messages in the Queue

To remove all messages from the queue:
exim -bp | exiqgrep -i | xargs exim -Mrm

 

Remove Frozen Messages in the Queue

Frozen messages are those that Exim has given up on delivering. To remove frozen messages:
exiqgrep -z -i | xargs exim -Mrm

 

Remove Messages Older Than a Specific Time with a Specific Error Status

To remove messages older than a specific time with a specific error status:
exiqgrep -i -o 86400 -f '<>' | xargs exim -Mrm

 

Viewing Message Details

List Only the Message IDs in the Queue

To list only the message IDs:
exim -bp | exiqgrep -i

 

View the Headers of a Specific Message

To view the headers of a specific message:
exim -Mvh <message-id>

 

View the Body of a Specific Message

To view the body of a specific message:
exim -Mvb <message-id>

 

Freezing and Thawing Messages

Freeze a Specific Message

To freeze a specific message:
exim -Mf <message-id>

 

Thaw a Specific Frozen Message

To thaw a specific frozen message:
exim -Mt <message-id>

 

Forcing Message Delivery

Force a Specific Message to Be Delivered
To force a specific message to be delivered:
exim -M <message-id>
 
Force a Message to Be Delivered and Then Remove It
To force a message to be delivered and then remove it:
exim -Mrm <message-id>

 

Queue Summary and Counts

List the Number of Messages in the Queue
To list the number of messages in the queue:
exim -bpc

 

Print a Detailed List of Messages in the Queue

To print a detailed list of messages in the queue:
exim -bp | exiqsumm
 
Remove All Messages in the Queue (Alternative Method)
An alternative method to remove all messages in the queue:
exim -bpru | awk '{print $3}' | xargs exim -Mrm

Conclusion

Efficient management of the Exim mail queue is essential for maintaining a healthy and responsive mail server. The commands provided in this article cover a wide range of operations, from listing and viewing message details to removing and managing queued emails. By mastering these commands, you can ensure that your mail server operates smoothly and efficiently.


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