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Operating Systems Solaris Cannot resolve PTR record issue Post 302844893 by Junaid Subhani on Tuesday 20th of August 2013 08:36:58 AM
Old 08-20-2013
Wrench Cannot resolve PTR record issue

Hi guys,
I am currently receiving the following output in /var/log/syslog and is occurring every second leading to /var directory being full after every 2 days.


Code:
Aug 20 17:32:29 opaldn1 sendmail[2517]: [ID 801593 mail.notice] r7KCOlQm002517: ruleset=check_rcpt, arg1=<postmaster@silverapp6>, relay=[172.21.100.5], reject=450 4.4.0 <postmaster@silverapp6>... Relaying temporarily denied. Cannot resolve PTR record for 172.21.100.5

silverapp6 is a node in the network and its IP address is 172.21.100.5.

opaldn1 is the DNS server of my environment on which this error is occurring.

How can I resolve this ?

Regards
 

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TOR-RESOLVE(1)                                                      Tor Manual                                                      TOR-RESOLVE(1)

NAME
tor-resolve - resolve a hostname to an IP address via tor SYNOPSIS
tor-resolve [-4|-5] [-v] [-x] hostname [sockshost[:socksport]] DESCRIPTION
tor-resolve is a simple script to connect to a SOCKS proxy that knows about the SOCKS RESOLVE command, hand it a hostname, and return an IP address. By default, tor-resolve uses the Tor server running on 127.0.0.1 on SOCKS port 9050. If this isn't what you want, you should specify an explicit sockshost and/or socksport on the command line. OPTIONS
-v Display verbose output. -x Perform a reverse lookup: get the PTR record for an IPv4 address. -5 Use the SOCKS5 protocol. (Default) -4 Use the SOCKS4a protocol rather than the default SOCKS5 protocol. Doesn't support reverse DNS. SEE ALSO
tor(1), torify(1). See doc/socks-extensions.txt in the Tor package for protocol details. AUTHORS
Roger Dingledine <arma@mit.edu>, Nick Mathewson <nickm@alum.mit.edu>. AUTHOR
Peter Palfrader Author. Tor 09/26/2014 TOR-RESOLVE(1)
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