Question : Exchange 2007 POP3

We have pop3 setup on our Exchange 2007 server however users who are trying to connect using their mobiles can send but not receive e-mails. They receive an error stating that the authentication failed. We cannot seem to figure out where the problem is because according several websites its setup correctly, however something must be wrong. Here is the steps we went through:

1. Set MSExchangePOP3 service to automatic
Set-service msExchangePOP3 -startuptype automatic

2. Configure IP Address and Port for POP3

a.  To set the IP address and port for communicating with Exchange using POP3 with SSL, run the following command:
    Set-PopSettings -SSLBindings: IPaddress:Port

b.To set the IP address and port for communicating with Exchange using POP3 with no encryption or Transport Layer Security (TLS) encryption,    
    Set-PopSettings -UnencryptedOrTLSBindings IPaddress:Port

3.Configure POP3 Authentication - POP3 (110) /POP3 SSL (995)

a.If you will not be using TLS encryption and you want to allow Basic authentication on an unsecured port, run the following command:
   Set-PopSettings -LoginType PlainTextLogin

b.If you will not be using TLS, but you want to restrict Basic authentication to use only secured ports, run the following command:
   Set-PopSettings -LoginType PlainTextAuthentication

c.If you want to use TLS encryption before authentication, run the following command:
   Set-PoPSettings -LoginType SecureLogin

4.Enable POP3 Protocol for the User Mailbox

Set-CasMailbox MailboxName -Popenabled:$true

5.Configure the SMTP Receive Connector on the Exchange Server to Allow Anonymous in order to send Email using the following command:
Set-ReceiveConnector "Servername\default Servername" -PermissionGroups
“ExchangeServers,ExchangeUsers,ExchangeLegacyServers,AnonymousUsers"

6.Restart the Microsoft Exchange POP3 Service
   Restart-service MSExchangepop3

We have it set to - plain text authentication.

Any ideas as to why this isn’t working to receive e-mail?

Answer : Exchange 2007 POP3

>does not stop the GPS listener

Then perhaps you have to dispose of it. E.g.

LocationProvider1.reset();
LocationProvider1 = null;

Also, you could try disposing of the timer. Basically, I think you need to remove all references to the LocationProvider object.