Article:
  Configuring sendmail on Jaguar
Subject:   nice article
Date:   2003-11-25 05:07:48
From:   anonymous2
Response to: nice article

i fixed it by editing /etc/hosts
changed
127.0.0.1 localhost myown.domain.nl
into
127.0.0.1 localhost domain.nl
the problem was that the remote mailservers couldnt resolve myown.domain.nl