Hello Tuan, TH> By default the sendmail in RH 7.1 comes with accepting mail from TH> other hosts/servers turned off as a security precaution. I dont have sendmail, i have qmail. -- Best regards, Fabian mailto:fabian1@inter-k.com.ar - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html