Am 18.10.2010 23:22, schrieb Dotan Cohen: > Well, I tried: > > [root at mercury ~]# ls -l /etc/aliases > -rw-r--r-- 1 root root 1512 Apr 25 2005 /etc/aliases > [root at mercury ~]# newaliases > [root at mercury ~]# service postfix restart > Shutting down postfix: [ OK ] > Starting postfix: [ OK ] > [root at mercury ~]# service postfix status > master (pid 12412) is running... > [root at mercury ~]# tail /var/log/maillog > Oct 18 23:15:59 mercury postfix/master[7816]: warning: > /usr/libexec/postfix/smtpd: bad command startup -- throttling > Oct 18 23:16:18 mercury dovecot: imap-login: Login: user=<sami37>, > method=PLAIN, rip=::ffff:127.0.0.1, lip=::ffff:127.0.0.1, secured > Oct 18 23:16:18 mercury dovecot: IMAP(sami37): Disconnected: Logged out > Oct 18 23:16:59 mercury postfix/smtpd[12298]: fatal: open database > /etc/aliases.db: No such file or directory Sendmail is still the default on CentOS. So to switch to Postfix you will have to use the mechanism to relink - using alternatives. What prints out: alternatives --display mta If that tells you that Sendmail is still the primary MTA, then run: alternatives --config mta and select Postfix. Then rerun "newaliases" or "postalias /etc/aliases". Alexander