the message always send to me by my hp-ux os,why?

[lesni_1]

root@aaaaa[/]Jul 18 05:49:32 aaaaa sendmail[12709]: unable to qualify my own domain name (aaaaa) -- using short name
Jul 18 05:49:34 aaaaa sendmail[12778]: unable to qualify my own domain name (aaaaa) -- using short name

You have mail in /var/mail/root

[Massimo Bianchi]

Hi,
just put in the /etc/hosts

IP_ADDRESS hostname hostname.


HTH,
Regards,
Massimo

[Zeev Schultz]

If you don't need sendmail go
to /etc/rc.config.d/mailservs,
put SENDMAIL_SERVER=0.

If you need however sendmail than in addition
to "." after hostname in /etc/hosts there
should also be in /etc/mail/sendmail.conf
like : Dj$w. (with ".").
Also "O TryNullMXlist" is suggested in the same file./etc/nsswitch.conf should go to "hosts: files dns...".

Zeev

[GIRIJA SWAIN]

Is this problem happening recently ? Have you configure any thing new for system monitoring, like EDN or Openview etc ?

Other than /etc/host entry, check your domain is registered and a Mx record exists.