Problems with Exim with ISP-dialupping

[Vesa Kaihlavirta <ronin@kolumbus.fi>]

I'm using an ISP to connect to the net. Exim's autoconfiguration makes a
working configuration, except that I cannot mail @kolumbus.fi. Those
addresses are considered local, and so if I try to mail some @kolumbus.fi,
I get a return receipt:

"
...
x@kolumbus.fi:
  unknown local-part "x" in domain "kolumbus.fi"
...
"

I'd like @kolumbus.fi understood as a mailname that resides in the net, and
@localhost as the _real_ local mailname.

My exim is 2.05-2.




--
V.K. <ronin@kolumbus.fi>