Returning back from different station

[TomB]

Hi Folks,

This weekend I'll be travelling down on Friday to Cork and coming back up to civilisation on Sunday from Millstreet.

Normally, we just buy a return ticket to Cork, and have never had any problems from IE ticket checkers for getting on at Millstreet.

My question is: is this strictly within IE terms and conditions? Or could we theoretically be charged with fare evasion for not having a ticket valid for travel?

I thought this had come up before on these forums but a search revealed naught...