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Full Discussion: Reverse lookup
Special Forums IP Networking Reverse lookup Post 51489 by RTM on Friday 21st of May 2004 09:36:00 AM
Old 05-21-2004
Quote:
my nameserver record has changed on my DNS configurartion(I don't know why) from something.gov to somethingelse.gov. Same IP, though.
Find out why it changed and what needs to be corrected on your end to insure it will work. It may be only a delay in the cache being used by other servers.

Quote:
When a reverse lookup is performed on the other end to verify my identity. Is it looking for the entire name or is it just verifying my IP addx is a .gov address?
A reverse lookup is done to insure that server1.anyother.xxx knows it's your server sending either email, web pages, or whatever. The PTR record is used to show that 10.140.50.1 is equal to your server server1.somewhere.gov when server1.somewhere.gov was shown to be from a certain IP.

If I try to send information to SUN from my internal servers via email, it won't accept it. That is because when SUN gets the email, it looks up the name of where it came from (let's say server1.intermedia.com) When SUN's email server does a reverse lookup, it finds out the DNS servers for intermedia.com, request the name of the IP for server1.intermedia.com. If that does not match what it reads from the info it received from my server off the email connection, then it refuses the email due to the possiblity that is was forged. Some sites just set the message as possibly being forged. Some sites reject it.

my nameserver record has changed on my DNS configurartion(I don't know why) from something.gov to somethingelse.gov. Same IP, though.

When a reverse lookup is performed on the other end to verify my identity. Is it looking for the entire name or is it just verifying my IP addx is a .gov address?
 

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LEARN ABOUT DEBIAN

xevil-serverping

serverping(6)							   Games Manual 						     serverping(6)

NAME

       serverping - check the status of an XEvil server

SYNOPSIS

       serverping [-count num_tries] [-timeout timeout_ms] server_name[:port]

DESCRIPTION

       serverping  is  a  simple utility to give you information on an XEvil server, such as the game style, who is playing, and how well they are
       doing.

OPTIONS

       -count num_tries
	      specify the number of pings to send before giving up, default=3

       -timeout timeout_ms
	      specify the time in milliseconds to wait for a response before giving up, default=1000

       server_name[:port]
	      specify the server name or IP address, optionally with port, default port is 6066

EXAMPLES

       serverping whitehouse.gov
	      This will give you the game status of the XEvil game running on the server at whitehouse.gov, at default port 6066. It  will  try  3
	      times, and wait 1 sec per try. At the time of this writing, whitehouse.gov is not running an XEvil server.

       serverping -timeout 5000 292.43.199.64:9999
	      This  will give you the game status of the XEvil game running on the server at 292.43.199.64, at port 9999. It will try 3 times, and
	      wait 5 sec per try. 292.43.199.64 is not a valid IP address.

GAME AUTHOR

       Steve Hardt

MAN PAGE AUTHOR

       Brandon Barnes

								  January 2, 2007						     serverping(6)
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