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The POP3 Server component is used for delivering emails to clients from your own application.
This component represents fully functional multithreaded server with the ability to customize the user and thread performance settings, supports all POP3 extensions according to RFC 1939, RFC 1734 and RFC 2449 protocols.
When using together with SMTP Server, it allows reading incoming messages received by SMTP Server without writing a single line of the code.
You can use X.509 certificates for establishing the SSL / TLS secured connection.
See SSL / TLS support and Using certificates
With POP3 Server component you can enable debug log for showing entered commands and replies sent to the user.
Please see the Demos code (Pop3Server, Pop3ServerSSL) and also the indexed Help documentation provided with the Clever Internet Suite installation for more details about using this component.
The most common members of the POP3 Server component can be seen below:
 Name |
 Description |
 BatchSize |
Specifies the size of the transferred batch. |
| CaseInsensitive |
Specifies whether the user account validation is case-insensitive. |
| MaxThreadCount |
Gets or Sets the number of requests to the server that can be active concurrently. |
| MinThreadCount |
Gets or Sets the number of idle threads the server maintains in anticipation of new requests. |
| Port |
Specifies the port on which the POP3 server will listen to the user connections. |
| UserAccounts |
Provides a list of users which have allowed connecting to the POP3 server. |
| UseAuth |
Makes the component use the Secure Password Authentication method during the connecting session. |
| UseTLS |
Specifies whether the component should use the TLS / SSL security protocol. |
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| Name |
Description |
| Start |
Starts the POP3 server. |
| Stop |
Stops the POP3 server. |
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| Name |
Description |
| OnAPopAuthenticate |
Occurs when the POP3 server has accepred the APOP authentication information from the user and needs to authorize or decline the connection. |
| OnDelete |
Occurs when the POP3 server deletes the mail message. |
| OnLoginAuthenticate |
Occurs when the POP3 server has accepred the LOGIN authentication information from the user and needs to authorize or decline the connection. |
| OnMailBoxInfo |
Occurs when the POP3 server retrieves the information about the mailbox. |
| OnRetrieve |
Occurs when the POP3 server retrieves the mail message. |
| OnReceiveCommand |
Occurs when the POP3 server has received a command from the user. |
| OnSendResponse |
Occurs when the POP3 server has sent a reply on the command being received earlier. |
| OnServerError |
Occurs when an error is encountered when any action is performed. |
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