Every content item in this list is tagged with all the required labels:

• be
• error
• file
• help
• improvements
• issues
• kb-troubleshooting-article
• mail
• problems
• sasl
• smtp
• undelivered

To add a label to the list of required labels, choose '+ labelname' from Related Labels.
To remove a label from the required labels, choose '- labelname' from above.