Outlook Problems, Unable to connect to WorldPosta Exchange

Outlook Problems, Unable to connect to WorldPosta Exchange system.


Tags: Unencrypted, Outlook, Autodiscover, SRV, Internal DNS, Firewall, Ports.


  • This article will help you to deeply troubleshoot outlook failure in connection to WorldPosta Exchange system while trying to automatically configure your account using autodiscover configuration, and solve the problem that causes the following message;


  • NoteIf any method doesn’t resolve the problem, go to the next Method. until finding the problem cause.
  • You are expected to be unable to automatically set up your Outlook profile and face this message while the configuration
“An encrypted connection to your mail server is not available. 
 Click next to attempt using an unencrypted connection"

13 - Outlook Problems, Unable to connect to WorldPosta Exchange

This message doesn’t indicate that WorldPosta mail server doesn’t support encryption connection, it means outlook can’t get the correct settings to connect to the mail server or there is an obstacle has interrupted the connection between the outlook client and the server. This may be caused by incomplete or missing autodiscover records in DNS, Internal network reason or other reasons will be mentioned below;

You can release this problem by manual setup your account to guide the autodiscover configuration to the server name directly.

The following are the troubleshooting step showed be followed to release such case


  • The following are the troubleshooting step showed be followed to release such case

1.  Ensure that you entered the email address and password correctly. “test via login to webmail”

2.  Updates for outlook version you are using are not setup,

The following links for Microsoft Office 2010 service pack:-


  • For 32-Bit Edition:-



  • For 64-Bit Edition:-



3.  SRV record “therefore autodiscover” are missed or not created correctly in your public DNS. ADD SRV correctly, to be sure from SRV validity you can test connectivity


When the test is performed, determine whether it’s successful.

·         If it is successful, Autodiscover is working correctly.

·         If it fails, verify that the Autodiscover service is set up correctly. For more information, see the following resources:


1.  Add SRV record to your internal DNS: force the autodiscover configuration to search a hostname that is listed on your local domain. This is actually fairly simple to do. The following steps to configure the Service Locator record in your internal domain.

From the DNS manager on your Domain Controller.
Domain’s Forward Lookup Zone “the same domain which is hosted on WorldPosta if it does not exist you can create new zone then add the domain”.

Right-click on the Zone name and select Other New Records.
Select Service Location (SRV) from the list.
Enter the settings as shown below:


14 - Outlook Problems, Unable to connect to WorldPosta Exchange


Name: @
Target: autodiscover.worldposta.com
Protocol: _tcp.
Service: _autodiscover
Priority: 0
Weight: 0
Port: 443

1.  Allow the following service on the firewall to connect to WorldPosta


DNS Name=worldposta.com

DNS Name=www.worldposta.com

DNS Name=mail.worldposta.com

DNS Name=admin.worldposta.com

DNS Name=autodiscover.worldposta.com

DNS Name=imap.worldposta.com

Open these Ports

443, 6001, 6002. 6003. 6004, 465, 143, 993



1.  In the Settings view, open the Protection tab and select Anti-Spam in the right frame. Click the switch to disable the component. As shown attached.