1. List all messages currently in the Exim mail queue
   exim -bp
   read-only · linux

2. List queued Exim message IDs from one sender
   exiqgrep -f <sender-regular-expression> -i
   read-only · linux

3. List queued Exim message IDs for one recipient
   exiqgrep -r <recipient-regular-expression> -i
   read-only · linux

4. List Exim message IDs queued for more than one day
   exiqgrep -o <age-in-seconds> -i
   read-only · linux

5. List frozen Exim message identifiers
   exiqgrep -z -i
   read-only · linux

6. List frozen Exim messages older than one day
   exiqgrep -z -o 86400 -i
   read-only · linux

7. List non-frozen Exim message IDs
   exiqgrep -x -i
   read-only · linux

8. Find Exim messages sent from one address to another
   awk -v sender=<sender-email> -v recipient=<recipient-email> '$4=="<=" && $5==sender {seen[$3]=1} ($4=="=>" || $4=="==" || $4=="**") && $5==recipient && seen[$3] {print}' <exim-log-file>
   read-only · linux

9. Show the complete Exim log trace for a message ID
   exigrep <exim-message-id> <exim-log-file>
   read-only · linux

10. Print one effective Exim configuration option
   exim -bP <configuration-option>
   caution · linux