How should an e-mail client on a mobile device be configured for maximum security? (Select the two best answers.)

Configuring an email client on a mobile device for maximum security involves utilizing secure protocols that encrypt the connection between the client and the email server. The correct option, which includes “POP3 with TLS using port 995,” focuses on employing the Post Office Protocol version 3 (POP3) with Transport Layer Security (TLS) for encrypting email data. This ensures that emails are securely downloaded from the server to the client, preventing unauthorized access during transit. Using port 995, specifically designated for secure POP3, enhances confidentiality and integrity of the email messages.

Additionally, considering the requirements for sending emails, SMTP with TLS on port 587 is commonly used for submitting outgoing emails securely. This dual approach of securing both incoming and outgoing emails maximizes the overall security of the email communication process on mobile devices.

In this context, using SSL on port 25 is not optimal as port 25 is primarily associated with standard SMTP without encryption and is often blocked by ISPs to prevent spam. TLS on port 443 is misapplied here because port 443 is typically used for HTTPS traffic, not email protocols. Therefore, it's essential to choose the correct ports and encryption standards specific to email functionalities to ensure maximum security.