Parece que seu /etc
tem permissão errada. Deve ser 755 e de propriedade do root. Então, faça os seguintes comandos e tente novamente:
# chmod g-w /etc
# chown root:root /etc
[root@arcade mail]# ls -l /etc/ | grep mail; ls -l /etc/mail; service sendmail start
drwxr-xr-x. 2 root root 4096 2011-01-27 20:06 mail
-rw-r--r-- 1 root root 272 2009-11-17 21:13 mailcap
-rw-r--r-- 1 root root 1968 2010-10-26 14:44 mail.rc
total 192
-rw-r--r-- 1 root root 469 2007-08-27 11:25 access
-rw-r-----. 1 root root 12288 2011-01-27 20:06 access.db
-rw-r--r--. 1 root root 0 2010-09-30 14:25 aliasesdb-stamp
-rw-r--r-- 1 root root 233 2007-04-12 15:35 domaintable
-rw-r-----. 1 root root 12288 2011-01-27 20:06 domaintable.db
-rw-r--r-- 1 root root 5584 2010-03-27 21:10 helpfile
-rw-r--r-- 1 root root 64 2007-04-12 15:35 local-host-names
-rw-r--r-- 1 root root 997 2007-04-12 15:35 mailertable
-rw-r-----. 1 root root 12288 2011-01-27 20:06 mailertable.db
-rwxr-xr-x 1 root root 2700 2008-12-19 13:23 make
-rw-r--r-- 1 root root 92 2008-12-03 18:29 Makefile
-rw-r--r-- 1 root root 58439 2010-03-27 21:10 sendmail.cf
-rw-r--r-- 1 root root 7202 2008-12-03 18:29 sendmail.mc
-rw-r--r-- 1 root root 41521 2010-03-27 21:10 submit.cf
-rw-r--r-- 1 root root 941 2010-03-27 21:09 submit.mc
-rw-r--r-- 1 root root 127 2007-04-12 15:35 trusted-users
-rw-r--r-- 1 root root 1847 2007-04-12 15:35 virtusertable
-rw-r-----. 1 root root 12288 2011-01-27 20:06 virtusertable.db
Starting sendmail: 451 4.0.0 /etc/mail/sendmail.cf: line 87: fileclass: cannot open '/etc/mail/local-host-names': Group writable directory
451 4.0.0 /etc/mail/sendmail.cf: line 596: fileclass: cannot open '/etc/mail/trusted-users': Group writable directory
[FAILED]
Nem /etc/mail
nem /etc/mail/trusted-users
é gravável por grupos. Por que o sendmail está reclamando?
Por favor, veja o arquivo README que vem com o sendmail: man sendmail
chmod go-w / /etc /etc/mail /usr /var /var/spool /var/spool/mqueue
Substituindo linha
Fw/etc/mail/local-host-names
com Fw-o /etc/mail/local-host-names
e
Ft/etc/mail/trusted-users
com Ft-o /etc/mail/trusted-users
no sendmail.cf e no submit.cf