problemas instalando el sendmail

[Koro]

Buenas, tengo Debian Sarge instalado. Quiero instalar el hylafax y como requisito tengo que tiene que estar instalado el sendmail

hago un apt-get install sendmail y obtengo lo siguiente:

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

Sorry, but the following packages have unmet dependencies:
  sendmail:         Depends: sendmail-bin but it is not going to be installed
                Depends: rmail but it is not going to be installed
E: broken packages.

Sabeis qu� es lo que est� pasando?? Qu� puedo hacer para instalar el sendmail??

Muchas gracias y un saludo!
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