mensajes enc cola

tengo un server 2003, pero al mandar correo atraves del smtp del iis se
quedan en la carpeta de queue, trate hacer un telnet e igual pasa lo manda

la carpeta de queue, cree dominios de smtp para permitir la salida, agrege
que hiciera relay a la ip y aun asi no salen.

que puedo estar deteniendo la salida del smtp, en el event log encuentro

event id 4005 y 4006

Event Type: Warning
Event Source: smtpsvc
Event Category: None
Event ID: 4006
Date: 07/07/2005
Time: 12:47:05 p.m.
User: N/A
Computer: DWWEB
Description:
Message delivery to the host '192.168.128.45' failed while delivering to

remote domain 'soriana.com' for the following reason: The connection was
dropped by the remote host.


Event Type: Information
Event Source: smtpsvc
Event Category: None
Event ID: 4005
Date: 07/07/2005
Time: 12:47:30 p.m.
User: N/A
Computer: xxxxxxxxx
Description:
Time spent on preparing to reset routes: [0] milliseconds Time spent on
recalculating next hops: [0] milliseconds Queue length : [0]