For users Postfix and ipop3d as a mail server which handles xinetd pop3 connections. Sometimes when the client conn to check email, they conn but requires 30 seconds just to get it. Not the time to download the emails in question here but the time the negotiations until a connection is established. Xinetd seems to hold the connection for some reason. Success of new connections but long established, although the client on the LAN have IP addresses within the same subnet with the POP server and all of the address has been allow in / etc / hosts or in ipop3d config and all firewalls turned off.
(from http://forums.devshed.com/mail-server-help-111/client-connection-to-ipop3d-deamon-takes-30-seconds-to-complete-190324.html) Try steps as follows:
In the POP Server login as root and edit / etc/xinetd.d/ipop3
Put a # in line log_on_success and log_on_failure like the following example:
# default: on
# description: The POP3 service allows remote users Their access to mail \\
# using an POP3 client Such as Netscape Communicator, mutt, \\
# or fetchmail.
service pop3 {socket_type = stream
wait = no user = root server =
/ usr/sbin/ipop3d
# log_on_success + = UserID
# log_on_failure + = UserID
}
After that save, then restart xinetd through console with the following command: # service xinetd
restart
(from https: / / www.redhat.com/archives/guinness-list/2001-July/msg00015.html)
-Good luck.