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Connections not shown in netstat output

 
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Old 04-17-2011
Connections not shown in netstat output
I have a TCPIP server application (a Vendor package) which by default allows 10 connections. It provides a parameter to allow us to increase the maximum allowable connections in case it is needed. Intermittently this application is failing with maximum number of connections reached even when there is no client activities. I am the application support and do not have root authority. When the error occour, I use netstat -an to display the connections. But I do not see any connection to the port that the server application is listening on. The server application is listening on port 7780, the command I used was netstat -an | grep 7780. But there no connection showing. I also pipe the output of netstat -an to a file and read through it carefully. I did not see any connection to that port. Is it possible that netstat -a will not show all connections or do I actually need root authority to see all ? If not, then how can I determine what is the problem.
 
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LEARN ABOUT OPENSOLARIS

lmtpd

LMTPD(8)                                                      System Manager's Manual                                                     LMTPD(8)

 *

NAME

       lmtpd - LMTP server process

SYNOPSIS

       lmtpd [ -C config-file ] [ -U uses ] [ -T timeout ] [ -D ]
             [ -a ]

DESCRIPTION

       Lmtpd is an LMTP server used to deliver mail to the IMAP mailstore.  It accepts commands on its standard input and responds on its standard
       output.  It MUST be invoked by cyrmaster(8) with those descriptors attached to a remote client connection.

       Lmtpd reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.

OPTIONS

       -C config-file
              Read configuration options from config-file.

       -U uses
              The maximum number of times that the process should be used for new connections before shutting down.  The default is 250.

       -T timeout
              The number of seconds that the process will wait for a new connection before shutting down.  Note that a value of 0 (zero) will dis-
              able the timeout.  The default is 60.

       -D     Run external debugger specified in debug_command.

       -a     Preauthorize  connections initiated on an internet socket, instead of requiring LMTP AUTH.  This should only be used for connections
              coming from trusted hosts.

FILES

       /etc/imapd.conf

SEE ALSO

       imapd.conf(5), cyrmaster(8)

CMU                                                                Project Cyrus                                                          LMTPD(8)