mail sending

I have a Enterprise Linux 4 . (sendmail & dovecot)

my all LAN users could able to send & receive emails.
but on server terminal could not send message to any others users.

what I m looking for.

 

What command did you use for sending mails? Any errors in your mail log?

 

I m using mail command on terminal and eroor found is could not reached your server. I have telnet my host name with port 25 but not responding but when I telnet with my ip its reply.

 

Is your hostname listed in /etc/hosts?

 

my host file is :

127.0.0.1 hblpk.com hblpk localhost.localdomain localhost localh
ost.com localhost.com.


my email server is

192.168.0.53

DNs is
202.163.96.3 (my ISP DNS)

 

And is your hostname in there? What's your hostname?
Is your mail server on the same machine, or is it a different system?

 

my host name is "hblpk.com" there is only one server.
IP is 192.168.0.53

another question is this under /etc/mail/sendmail.cf
smart relay host option can I put IP adddress except host name.

 

Add

Code:

192.168.0.53 hblpk.com

to /etc/hosts.