Similar to Arin, the ____________ Can Be Used to Find
Similar to ARIN, the ____________ can be used to find a domain's IP address and point of contact.
Many web-based e-mail providers offer _______________ services, such as Yahoo! Messenger and Google Talk.
a.client server / architecture
A method of storing e-mail messages in a flat plaintext file
An enhancement of SMTP for sending and receiving e-mail messages. ESMTP generates a unique, nonrepeatable number that's added to a transmitted e-mail. No two messages transmitted from an e-mail server have the same ESMTP value.