Problem to connect to the server

Hi folks,

we use PostgreSQL 8.1 and the ODBC PostgreSQL Unicode 8.01.02.00 /
31.1.2006.

My application can connect on the localhost but not to a remote server.
I have switched on the ODBC logging, but i cannot found why ?

The logfiles:
psqlodbc.780.log
DSN info:
DSN='PostgreSQL',server='',port='5432',dbase='',user='',passwd='xxxxx'

onlyread='0',protocol='6.4',showoid='0',fakeoidindex='0',showsystable='0'
conn_settings='',conn_encoding='OTHER'
translation_dll='',translation_option=''
conn = 70792624, PGAPI_Connect(DSN='PostgreSQL', UID='OfficeTalk',
PWD='xxxxx')
Global Options: Version='08.01.0100', fetch=100, socket=0,
unknown_sizes=254, max_varchar_size=8190, max_longvarchar_size=70792752
disable_optimizer=1, ksqo=1, unique_index=1,
use_declarefetch=0
text_as_longvarchar=1, unknowns_as_longvarchar=0,
bools_as_char=1 NAMEDATALEN=64
extra_systable_prefixes='dd_;', conn_settings=''
conn_encoding='OTHER'
CONN ERROR: func=PGAPI_Connect, desc='Error on CC_connect', errnum=201,
errmsg='Missing server name, port, or database name in call to CC_connect.'
------------------------------------------------------------
henv=70792568, conn=70792624, status=0, num_stmts=16

======================================================================
psqlodbc.1148.log
DSN info:
DSN='PostgreSQL',server='',port='5432',dbase='',user='',passwd='xxxxx'

onlyread='0',protocol='6.4',showoid='0',fakeoidindex='0',showsystable='0'
conn_settings='',conn_encoding='OTHER'
translation_dll='',translation_option=''
DSN info:
DSN='PostgreSQL',server='SEIFERT',port='5432',dbase='OfficeTalk',user='postgres',passwd='xxxxx'

onlyread='0',protocol='6.4',showoid='0',fakeoidindex='0',showsystable='0'
conn_settings='',conn_encoding='OTHER'
translation_dll='',translation_option=''

Josef