is mail-host-address set automatically

[Uwe Brauer]

Hello 

This seems odd, running (K)ubuntu 8.04 and xemacs 21.4.21
it seems that mail-host-address is set automatically to the name of the
machine as specified in /etc/hosts.

However in 
(K)ubuntu 6.01 and 21.4.19 that is not true the variable is nil.

Any explanation, or something in me systems setting in /etc is not
correct?

Uwe Brauer