Delay in Mail sent and FTP

To avoid delay in mail send and FTP

SWSoft has provided following info...
Not the extra parameter added "-Rt0" in below file.

Dedicated server could not run with reverse lookup switched
on because it results in extrme delays in sending mail and FTP


Code:
[root@localhost root]# cat /etc/xinetd.d/smtp_psa
service smtp
{
socket_type = stream
protocol = tcp
wait = no
disable = no
user = root
instances = UNLIMITED
server = /var/qmail/bin/tcp-env
server_args = -Rt0 /var/qmail/bin/relaylock /var/qmail/bin/qmail-smtpd /var/qmail/bin/smtp_auth /var/qmail/bin/true /var/qmail/bin/cmd5checkpw /var/qmail/bin/true
}