I search through new records, the field is a multiline field.
Filter is:
Data is:
smtp; 554 4.4.7 Message expired: unable to deliver in 840 minutes.<452-4.2.2 The recipient’s inbox is out of storage space. Please direct the452-4.2.2 recipient to452 4.2.2 Manage your storage in Drive, Gmail & Photos - Gmail Help xxx.7 - gsmtp>
The preview of the field in the table only shows:
“smtp; 554 4.4.7 Message expired: unable to deliver in 840 minutes.”
Maybe the filter doesn’t search the complete field?