About: http://webisa.webdatacommons.org/358505581

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	I answer to myself :There was an error in the postfix main.cf file :default_transport = error
http://www.w3.org/ns/prov#wasQuotedFrom	iredmail.org