Just like any other software, virtual private networks are not perfect and have certain flaws. Occasionally when you are using the private network connection, you might experience some frustrating challenges. Some of the obstacles include a slow connection and the inability to connect to some servers on the network. Most VPN providers have these issues, and the quality of the service is what determines how fast the provider fixes their product....

Simple Mail Transfer Protocol (SMTP) is one of the forms of the TCP/IP protocol applied in sending and receiving e-mails. The ability of the SMTP is limited when it comes to the aspect of queueing messages at the receiving end. The above makes it necessary for the implementation of some other protocols such as the IMAP and POP3, to facilitate the queuing process. The two mentioned protocols help in the saving of the messages in the server...