User "barbox!user" would generally publish their UUCP email address in a form such as "…!bigsite!foovax!barbox!user". This directs people to route their mail to machine "bigsite" (presumably a well-known and well-connected machine accessible to everybody) and from there through the machine "foovax" to the account of user "user" on "barbox". Publishing a full path would be pointless, because it would be different, depending on where the sender was. (e.g. Ann at one site may have to send via path "gway!tcol!canty!uoh!bigsite!foovax!barbox!user", whereas from somewhere else, Bill has to send via the path "pdp10!router22!bigsite!foovax!barbox!user"). Many users would suggest multiple routes from various large well-known sites, providing even better and perhaps faster connection service from the mail sender.