[exim] problem with 'connection refused'

Hi,

I'm having a strange problem - my exim (4.43) server sends and receives mail
fine except for delivery to 'postmaster@???'. I'm getting the
following in my log file:

2005-10-05 13:44:41 1EN73n-00008Z-Vo kormar.net [217.91.111.75]: Connection
refused
2005-10-05 13:44:41 1EN73n-00008Z-Vo == postmaster@???
R=local_network T=remote_smtp defer (111): Connection refused

I tried: '# exim -bv postmaster@???' and it comes back verified
I tried: '# exim -bt postmaster@???' and it comes back with the
router and host info.

Here is a part of my exim.conf file:

primary_hostname = mail.kormar.net

domainlist local_domains = @ : localhost : kormar.net : kormar.org :
kormar.de : kordula.de
domainlist relay_to_domains = *.kormar.net : *.kormar.org : *.kormar.de :
*.kordula.de
hostlist relay_from_hosts = 127.0.0.1 : 192.168.1.0/24 : *.kormar.net :
*.kormar.org : *.kormar.de : *.kordula.de
hostlist auth_relay_hosts = *

qualify_domain = kormar.net

# qualify_recipient =

I do not really understand why I'm getting a 'connection refused'? Oh, I
also have my host 'mail.kormar.net' mapped in my hosts file to the private
IP of my machine.

Thank you in advance for any/all help!
Robert