postfix config (network unreachable?)

[Erik Steffl <steffl@bigfoot.com>]

  I am running debian unbstable, kernel 2.2.17 and I just installed
postfix using the 'internet with smarthost' config option.

  when I try to send an e-mail to non-local address it says that the
network is unreachable, here's relevant part from syslog:

---------------------- syslog ------------------
...
Dec  9 00:52:24 jojda postfix/pickup[27820]: 657661D662: uid=1000
from=<erik>
Dec  9 00:52:24 jojda postfix/cleanup[28412]: 657661D662:
message-id=<20001209085224.657661D662@jojda>
Dec  9 00:52:24 jojda postfix/qmgr[27821]: 657661D662:
from=<erik@jojda.2y.net>, size=294, nrcpt=1 (queue active)
Dec  9 00:52:25 jojda postfix/smtp[28413]: connect to
crick.fmed.uniba.sk[158.195.48.201]: Network is unreachable (port 25)
Dec  9 00:52:25 jojda postfix/smtp[28413]: 657661D662:
to=<steffl@crick.fmed.uniba.sk>, relay=none, delay=1, status=deferred
(connect to
 crick.fmed.uniba.sk[158.195.48.201]: Network is unreachable)
----------------------- end of syslog ---------------

  I can ping crick, I can also telnet (using default telnet port)
without problems but when I do telnet crick.fmed.uniba.sk 25 from
command line I get the same message (network is unreachable, but only
when using port 25).

  netscape mail agent works fine, it does not try to directly deliver
mail but uses my ISP mail server.

  any ideas what's going on?

	erik