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.