Thanks a lot, its works fine without warning message.
and also i have one more warning message when i pass newaliases command, i hope its bcs of old version.
[root@anakin root]# newaliases
Warning: .cf file is out of date: sendmail 8.12.9 supports version 10, .cf file
is version 8
/etc/aliases: 68 aliases, longest 1014 bytes, 1842 bytes total
any simple solution to avoid this warning message ?. bcs if i place new version of sendmail.cf , sendmail makes me problem.
thanks in advance