About: http://webisa.webdatacommons.org/223078365

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	Based on my experience, a migration is a migration, and particularly with cutovers, you do not add a whole lot of complexity by migrating to a new or different mail server, just so long as you know how to setup the new version.
http://www.w3.org/ns/prov#wasQuotedFrom	serverfault.com