This page lets you configure some network settings which are not normally needed for operating VPOP3, but which are sometimes useful. To get to this page, go to Utilities -> Misc Settings then Network Tweaks.
When VPOP3 establishes a connection to the Internet, it attempts to connect to your ISP mail servers. To try to get around transient errors which can occur at the start of a connection or occasionally during a connection, VPOP3 will retry connections several times as below.
The Socket Timeouts options allow you to set timeouts for sending and receiving data. Two timeouts are configurable:
Server This is the timeout used when an email client program connects to VPOP3.
Client This is the timeout used when VPOP3 connects to your ISP.
Both timeouts are measured in seconds. The default values of 300 seconds (5 minutes) are acceptable for most situations, but you may wish to change them. It normally wouldn't be sensible to reduce them to less than 30 seconds, or increase them to more than 600 seconds (10 minutes).
You can change the maximum size of data blocks which VPOP3 uses for sending & receiving. Normally the default settings are OK, but if you have problems with sending or receiving large messages, you should try reducing the settings (512 is the usual minimum value to try). Reducing the settings unnecessarily will reduce the performance of VPOP3.
The Disable TCP/IP Nagle Algorithm option should normally be enabled (to disable the Nagle Algorithm). If you are having problems sending/receiving large messages you may want to try disabling this option to see if it makes any difference.
These options set the sizes of the TCP/IP buffers in Windows (the TCP/IP Block Sizes above, change the buffer sizes in VPOP3). If you have problems sending or receiving large messages, try reducing the buffer sizes down to 512 bytes. Normally you should not decrease the Winsock buffer sizes to below the TCP/IP Block Sizes above.
These settings let you change how VPOP3 tries to convert computer names into numeric IP addresses. Usually you will not have to change these settings, but if you get unusual name resolution errors it may be worth changing these settings. Click on the screenshot above for more information.
