Possibly the longest email address I've ever seen!
usarmy.jble.tradoc.mbx.eustis-tboc-dtl-helpdesk@mail.mil
usarmy.jble.tradoc.mbx.eustis-tboc-dtl-helpdesk@mail.mil
jble (Joint Base Langley-Eustis)
tradoc (Training and Doctrine Command)
mbx (mailbox)
eustis (Fort Eustis)
tboc (Training Brain Operations Center)
dtl (Data Transmission Lab)
helpdesk (help desk)
mail (mail)
mil (military domain)
Tells you everything you need to know.
I presume that dashed bit is what we'd think of as a normal email address.