I got the following erro log in /var/log/maillog file when I was tryingi to
send a local mail to root or using any other uesr account to send email to
local:

Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPX001788: i0SBbuPY001788: DSN:
Service unavailable
Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPY001788: to=root,
delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=32912, relay=[127.0.0.1],
dsn=5.0.0, stat=Service unavailable
Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPY001788: i0SBbuPZ001788:
return to sender: Service unavailable
Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPZ001788: to=postmaster,
delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=33936, relay=[127.0.0.1],
dsn=5.0.0, stat=Service unavailable
Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPY001788: Losing
../qfi0SBbuPY001788: savemail panic
Jan 28 19:37:56 redhat sendmail[1788]: i0SBbuPY001788: SYSERR(root):
savemail: cannot save rejected email anywhere

How can I fix this problem in sendmail?

Thanks
am