postfix cannot send mail anymore

[Edvard Majakari <Edvard.Majakari@tietovalta.fi>]

This happened after upgrading to potato. Funny thing is that I can
receive mail though.. here's program versions I have:

ed@lodge Tue 16 14:06 $ dpkg -l postfix netbase                               ~

Desired=Unknown/Install/Remove/Purge
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name            Version        Description
+++-===============-==============-============================================
ii  postfix         0.0.19990122pl A mail transport agent
ii  netbase         3.12-2         Basic TCP/IP networking binaries

mail.warn entries:

Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: private/smtp: malformed response
Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: mail_scan_any: got EOF; expected: string
Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: private/smtp: malformed response
Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: mail_scan_any: got EOF; expected: string
Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: private/smtp: malformed response
Mar 16 13:17:44 lodge postfix/qmgr[15996]: warning: mail_scan_any: got EOF; expected: string
...

and mail.err:

Mar 16 13:17:42 lodge postfix/smtp[18721]: fatal: unknown service: smtp/tcp
Mar 16 13:17:42 lodge postfix/smtp[18722]: fatal: unknown service: smtp/tcp
Mar 16 13:17:42 lodge postfix/smtp[18723]: fatal: unknown service: smtp/tcp
Mar 16 13:17:42 lodge postfix/smtp[18724]: fatal: unknown service: smtp/tcp
...

Any ideas?

-- 
# Ed               GSM: 050 5702056     URL: http://lodge.ton.tut.fi/%7Eed/

I find my lack of faith disturbing
  --me