Exchange 2007 - per Pop3 E-Mails abholen

Hallo Leute,

folgendes Problem ich würde gerne per Thunderbird von meinem Exchange Server 2007 SP1 E-Mails mittels Pop3 abholen.
Ich habe schon den Pop3 Connector eingeschalten. Dieser hört auf den Port 110 somit auch den Port in der Firewall (Router) freigegeben.
Als letztes habe ich noch in meinem Exchange Benutzerprofil Pop3 aktiviert.

Dennoch kann ich mich nicht verbinden
Der Exchange Server wirft folgendes Log raus:

#Software: Microsoft Exchange Server
#Version: 8.0.0.0
#Log-type: POP3 Protocol Log
#Date: 2010-01-24T02:53:07.420Z
#Fields: date-time,connector-id,session-id,sequence-number,local-endpoint,remote-endpoint,event,data,context
2010-01-24T02:53:07.420Z,,0000000003CE0BB8,0,192.168.10.10:110,84.148.110.205:51625,+,,
2010-01-24T02:53:07.459Z,,0000000003CE0BB8,1,192.168.10.10:110,84.148.110.205:51625,>,+OK The Microsoft Exchange POP3 service is ready.,
2010-01-24T02:53:07.634Z,,0000000003CE0BB8,2,192.168.10.10:110,84.148.110.205:51625,<,CAPA,
2010-01-24T02:53:07.660Z,,0000000003CE0BB8,3,192.168.10.10:110,84.148.110.205:51625,>,+OK,
2010-01-24T02:53:07.660Z,,0000000003CE0BB8,4,192.168.10.10:110,84.148.110.205:51625,>,TOP,
2010-01-24T02:53:07.661Z,,0000000003CE0BB8,5,192.168.10.10:110,84.148.110.205:51625,>,UIDL,
2010-01-24T02:53:07.661Z,,0000000003CE0BB8,6,192.168.10.10:110,84.148.110.205:51625,>,SASL NTLM GSSAPI,
2010-01-24T02:53:07.661Z,,0000000003CE0BB8,7,192.168.10.10:110,84.148.110.205:51625,>,STLS,
2010-01-24T02:53:07.661Z,,0000000003CE0BB8,8,192.168.10.10:110,84.148.110.205:51625,>,.,
2010-01-24T02:53:07.765Z,,0000000003CE0BB8,9,192.168.10.10:110,84.148.110.205:51625,<,AUTH NTLM,
2010-01-24T02:53:07.787Z,,0000000003CE0BB8,10,192.168.10.10:110,84.148.110.205:51625,>,+ ,
2010-01-24T02:53:07.900Z,,0000000003CE0BB8,11,192.168.10.10:110,84.148.110.205:51625,<,TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAGAbAdAAAADw==,
2010-01-24T02:53:07.938Z,,0000000003CE0BB8,12,192.168.10.10:110,84.148.110.205:51625,>,+ TlRMTVNTUAACAAAAGAAYADgAAAAFgomi5yKrsVYZ1YsAAAAAAAAAAL4AvgBQAAAABgBxFwAAAA9UAFIATwBQAEgALQBFAC0A
2010-01-24T02:53:08.045Z,,0000000003CE0BB8,13,192.168.10.10:110,84.148.110.205:51625,<,*,
2010-01-24T02:53:08.052Z,,0000000003CE0BB8,14,192.168.10.10:110,84.148.110.205:51625,>,-ERR The AUTH protocol exchange was canceled by the client.,
2010-01-24T02:53:08.154Z,,0000000003CE0BB8,15,192.168.10.10:110,84.148.110.205:51625,<,USER k.soellch,
2010-01-24T02:53:08.157Z,,0000000003CE0BB8,16,192.168.10.10:110,84.148.110.205:51625,>,-ERR Command is not valid in this state.,
2010-01-24T02:53:08.266Z,,0000000003CE0BB8,17,192.168.10.10:110,84.148.110.205:51625,-,,Local
2010-01-24T03:03:38.162Z,,0000000000AEC740,0,192.168.10.10:110,209.85.218.4:53582,+,,
2010-01-24T03:03:38.163Z,,0000000000AEC740,1,192.168.10.10:110,209.85.218.4:53582,>,+OK The Microsoft Exchange POP3 service is ready.,
2010-01-24T03:03:38.217Z,,0000000000AEC740,2,192.168.10.10:110,209.85.218.4:53582,<,USER k.soellch,
2010-01-24T03:03:38.217Z,,0000000000AEC740,3,192.168.10.10:110,209.85.218.4:53582,>,-ERR Command is not valid in this state.,
2010-01-24T03:03:38.271Z,,0000000000AEC740,4,192.168.10.10:110,209.85.218.4:53582,-,,Local
2010-01-24T03:08:29.452Z,,00000000039B3B4D,0,192.168.10.10:995,84.148.120.251:52001,+,,
2010-01-24T03:09:29.473Z,,00000000039B3B4D,1,192.168.10.10:995,84.148.120.251:52001,-,,Local
2010-01-24T03:14:46.875Z,,00000000023DF243,0,192.168.10.10:995,84.148.120.251:52145,+,,
2010-01-24T03:15:46.889Z,,00000000023DF243,1,192.168.10.10:995,84.148.120.251:52145,-,,Local
2010-01-24T03:25:36.136Z,,0000000003EE7DB9,0,192.168.10.10:110,209.85.218.16:42920,+,,
2010-01-24T03:25:36.136Z,,0000000003EE7DB9,1,192.168.10.10:110,209.85.218.16:42920,>,+OK The Microsoft Exchange POP3 service is ready.,
2010-01-24T03:25:36.191Z,,0000000003EE7DB9,2,192.168.10.10:110,209.85.218.16:42920,<,USER k.soellch,
2010-01-24T03:25:36.191Z,,0000000003EE7DB9,3,192.168.10.10:110,209.85.218.16:42920,>,-ERR Command is not valid in this state.,
2010-01-24T03:25:36.245Z,,0000000003EE7DB9,4,192.168.10.10:110,209.85.218.16:42920,-,,Local

hat einer ne Idee was ich falsch mache??

Gruß Kai Söllch