Hello,

I have the sendmail on HP Unix. The serve name is "abc" and the domain name is "xxx.com". Everytime I send out email, it always comes with root@abc.xxx.com not root@xxx.com.

I think there might be something wrong in sendmail configuration.

Can anybody please help to point it out?

thanks a lot!

Nothing is wrong. You need to look for and configure a feature called "Masquerading". The official sendmail distribution has support for this through its M4 configuration interface.

edit /etc/mail/sendmail.cf

find the line starting with letters DM (and most probably has nothing else following these two letters) and make it look like

DMxxx.com

where xxx.com is your email domain

if there is no such line, create one and save the file and exit.

Hope this helps

Thanks for help!
But it was configurated as "DMxxx.com" in sendmail.cf.
Could be anything else?

Is there an /etc/mail/submit.cf?

You need to comment out the "CE" line in sendmail.cf . However if you have multiple servers your "root" mail messages will now need to contain text to identify where they came from.

methyl is right. The "E" class is a list of users which are "Exposed" when Masquerading is on.