About: http://webisa.webdatacommons.org/233108522

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	There is a facility called header_checks(5) which will inspect headers and take actions, but although there is an action to place mail into the hold queue, there is no action to place mail into the deferred queue.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com