[CentOS] Mail from domain problem

Xia Guowen wrote:
> But,  I shutdown Kerio and config MTA = sendmail. 
> Then 
> # service sendmail start 
> # hostname
> mail.domain11.com
> # echo "test " | mail -s "test mail" someone at domain22.com
>
>
> I received is root at mail.domain11.com 
>   


with sendmail, you need to set some configuration options to masquerade 
the host if you want locally submitted mail to be 'from' the domain name.

typically, in /etc/mail/sendmail.mc, the line...

    MASQUERADE_AS(`mydomain.com')

then run `make` in that directory.   for this to work correctly, you 
need to install the sendmail-cf package

with any other mail client, its similar.