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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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Mail::SPF::Mech::PTR(3) 				User Contributed Perl Documentation				   Mail::SPF::Mech::PTR(3)

NAME
Mail::SPF::Mech::PTR - SPF record "ptr" mechanism class DESCRIPTION
An object of class Mail::SPF::Mech::PTR represents an SPF record mechanism of type "ptr". Constructors The following constructors are provided: new(%options): returns Mail::SPF::Mech::PTR Creates a new SPF record "ptr" mechanism object. %options is a list of key/value pairs representing any of the following options: qualifier domain_spec See "new" in Mail::SPF::Mech. new_from_string($text, %options): returns Mail::SPF::Mech::PTR; throws Mail::SPF::ENothingToParse, Mail::SPF::EInvalidMech Creates a new SPF record "ptr" mechanism object by parsing the string and any options given. Class methods The following class methods are provided: default_qualifier qualifier_pattern See "Class methods" in Mail::SPF::Mech. name: returns string Returns 'ptr'. name_pattern: returns Regexp Returns a regular expression that matches a mechanism name of 'ptr'. Instance methods The following instance methods are provided: text qualifier params stringify See "Instance methods" in Mail::SPF::Mech. domain_spec: returns Mail::SPF::MacroString Returns the "domain-spec" parameter of the mechanism. match($server, $request): returns boolean Checks whether the mechanism's target domain name, or a sub-domain thereof, is a "valid" domain name for the given request's IP address (see "ip_address" in Mail::SPF::Request), and returns true if it does, or false otherwise. See "valid_domain_for_ip_address" in Mail::SPF::Util for how domains are validated. See RFC 4408, 5.5, for the description of an equivalent algorithm. SEE ALSO
Mail::SPF, Mail::SPF::Record, Mail::SPF::Term, Mail::SPF::Mech <http://www.ietf.org/rfc/rfc4408.txt> For availability, support, and license information, see the README file included with Mail::SPF. AUTHORS
Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org> perl v5.12.1 2010-07-05 Mail::SPF::Mech::PTR(3)
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