无法解析主机名

Question

我们有一个web应用程序在Centos服务器上运行。我们的服务器位于德国，我们的webapp的主机名位于美国的Dns服务提供商。

主机名：www.chooseclick.com

我们的一些客户无法访问我们的网站，但大多可以。出现错误的客户端大多都有一个在其网络上运行的代理服务器。 但是当他们尝试通过服务器访问ip地址（62.75.230.187）时，他们可以访问网站。

会出现什么问题？

（SSL不活跃，现在这样https://www.chooseclick.com是行不通的。所以你必须http://www.chooseclick.com试试）

Answer 1

看起来是针对特定主机（www.chooseclick）一个DNS的问题，因为我可以肯定地确认域名通过whois（下面）是有效的，因为'ping'等网络测试命令无法解析名称。与任何控制您主机的DNS记录的人交谈。

wintermute:~ 08:56:29 melgart$ whois chooseclick.com 

Whois Server Version 2.0 

Domain names in the .com and .net domains can now be registered 
with many different competing registrars. Go to http://www.internic.net 
for detailed information. 

    Domain Name: CHOOSECLICK.COM 
    Registrar: WILD WEST DOMAINS, LLC 
    Sponsoring Registrar IANA ID: 440 
    Whois Server: whois.wildwestdomains.com 
    Referral URL: http://www.wildwestdomains.com 
    Name Server: NS10.NAMESERVERSERVICE.DE 
    Name Server: NS9.NAMESERVERSERVICE.DE 
    Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited 
    Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited 
    Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited 
    Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited 
    Updated Date: 21-apr-2016 
    Creation Date: 10-jan-2007 
    Expiration Date: 10-jan-2020 

>>> Last update of whois database: Sat, 12 Nov 2016 13:56:27 GMT <<< 

For more information on Whois status codes, please visit https://icann.org/epp 

NOTICE: The expiration date displayed in this record is the date the 
registrar's sponsorship of the domain name registration in the registry is 
currently set to expire. This date does not necessarily reflect the expiration 
date of the domain name registrant's agreement with the sponsoring 
registrar. Users may consult the sponsoring registrar's Whois database to 
view the registrar's reported date of expiration for this registration. 

TERMS OF USE: You are not authorized to access or query our Whois 
database through the use of electronic processes that are high-volume and 
automated except as reasonably necessary to register domain names or 
modify existing registrations; the Data in VeriSign Global Registry 
Services' ("VeriSign") Whois database is provided by VeriSign for 
information purposes only, and to assist persons in obtaining information 
about or related to a domain name registration record. VeriSign does not 
guarantee its accuracy. By submitting a Whois query, you agree to abide 
by the following terms of use: You agree that you may use this Data only 
for lawful purposes and that under no circumstances will you use this Data 
to: (1) allow, enable, or otherwise support the transmission of mass 
unsolicited, commercial advertising or solicitations via e-mail, telephone, 
or facsimile; or (2) enable high volume, automated, electronic processes 
that apply to VeriSign (or its computer systems). The compilation, 
repackaging, dissemination or other use of this Data is expressly 
prohibited without the prior written consent of VeriSign. You agree not to 
use electronic processes that are automated and high-volume to access or 
query the Whois database except as reasonably necessary to register 
domain names or modify existing registrations. VeriSign reserves the right 
to restrict your access to the Whois database in its sole discretion to ensure 
operational stability. VeriSign may restrict or terminate your access to the 
Whois database for failure to abide by these terms of use. VeriSign 
reserves the right to modify these terms at any time. 

The Registry database contains ONLY .COM, .NET, .EDU domains and 
Registrars. 
Domain Name: CHOOSECLICK.COM 
Registry Domain ID: 748038317_DOMAIN_COM-VRSN 
Registrar WHOIS Server: whois.wildwestdomains.com 
Registrar URL: http://www.wildwestdomains.com 
Update Date: 2015-02-19T20:47:25Z 
Creation Date: 2007-01-10T11:44:55Z 
Registrar Registration Expiration Date: 2020-01-10T11:44:55Z 
Registrar: Wild West Domains, LLC 
Registrar IANA ID: 440 
Registrar Abuse Contact Email: abuse@wildwestdomains.com 
Registrar Abuse Contact Phone: +1.4806242505 
Reseller: Domains Priced Right 
Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited 
Domain Status: clientUpdateProhibited http://www.icann.org/epp#clientUpdateProhibited 
Domain Status: clientRenewProhibited http://www.icann.org/epp#clientRenewProhibited 
Domain Status: clientDeleteProhibited http://www.icann.org/epp#clientDeleteProhibited 
Registry Registrant ID: Not Available From Registry 
Registrant Name: Registration Private 
Registrant Organization: Domains By Proxy, LLC 
Registrant Street: DomainsByProxy.com 
Registrant Street: 14747 N Northsight Blvd Suite 111, PMB 309 
Registrant City: Scottsdale 
Registrant State/Province: Arizona 
Registrant Postal Code: 85260 
Registrant Country: US 
Registrant Phone: +1.4806242599 
Registrant Phone Ext: 
Registrant Fax: +1.4806242598 
Registrant Fax Ext: 
Registrant Email: CHOOSECLICK.COM@domainsbyproxy.com 
Registry Admin ID: Not Available From Registry 
Admin Name: Registration Private 
Admin Organization: Domains By Proxy, LLC 
Admin Street: DomainsByProxy.com 
Admin Street: 14747 N Northsight Blvd Suite 111, PMB 309 
Admin City: Scottsdale 
Admin State/Province: Arizona 
Admin Postal Code: 85260 
Admin Country: US 
Admin Phone: +1.4806242599 
Admin Phone Ext: 
Admin Fax: +1.4806242598 
Admin Fax Ext: 
Admin Email: CHOOSECLICK.COM@domainsbyproxy.com 
Registry Tech ID: Not Available From Registry 
Tech Name: Registration Private 
Tech Organization: Domains By Proxy, LLC 
Tech Street: DomainsByProxy.com 
Tech Street: 14747 N Northsight Blvd Suite 111, PMB 309 
Tech City: Scottsdale 
Tech State/Province: Arizona 
Tech Postal Code: 85260 
Tech Country: US 
Tech Phone: +1.4806242599 
Tech Phone Ext: 
Tech Fax: +1.4806242598 
Tech Fax Ext: 
Tech Email: CHOOSECLICK.COM@domainsbyproxy.com 
Name Server: NS9.NAMESERVERSERVICE.DE 
Name Server: NS10.NAMESERVERSERVICE.DE 
DNSSEC: signedDelegation 
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/ 
>>> Last update of WHOIS database: 2016-11-12T13:00:00Z <<< 

For more information on Whois status codes, please visit https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en 

The data contained in this Registrar's Whois database, 
while believed by the registrar to be reliable, is provided "as is" 
with no guarantee or warranties regarding its accuracy. This information 
is provided for the sole purpose of assisting you in obtaining 
information about domain name registration records. Any use of 
this data for any other purpose is expressly forbidden without 
the prior written permission of this registrar. By submitting an 
inquiry, you agree to these terms of usage and limitations of warranty. 
In particular, you agree not to use this data to allow, enable, or 
otherwise make possible, dissemination or collection of this data, in 
part or in its entirety, for any purpose, such as the transmission of 
unsolicited advertising and solicitations of any kind, including spam. 
You further agree not to use this data to enable high volume, automated 
or robotic electronic processes designed to collect or compile this data 
for any purpose, including mining this data for your own personal or 
commercial purposes. 

Please note: the owner of the domain name is specified in the "registrant" section. 
In most cases, the Registrar is not the owner of domain names listed in this database.