SMTP (Simple Mail Transfer Protocol) is a protocol for transmitting email messages. An SMTP service extension is a feature or capability that can be added to the base SMTP protocol to provide additional functionality. These extensions are defined in the form of parameters that can be included in the SMTP ... Read More

Extended Simple Mail Transfer Protocol (ESMTP) is a protocol for sending email messages between servers. It is an extension of the Simple Mail Transfer Protocol (SMTP), which is the standard protocol for sending email messages on the Internet. ESMTP was designed to allow for greater flexibility and functionality in the ... Read More

Base64 encoding is a way to represent binary data in ASCII text format. It is often used for include small images in HTML, CSS, or JavaScript, or anything else text based. To encode data in Base64, the data is first converted to binary data and then broken into groups of ... Read More

RFC 5322 is a standard that defines the format of internet messages, such as email messages. It specifies the structure and content of email messages, including the headers, body, and attachments. The standard is maintained by the Internet Engineering Task Force (IETF) and is an important reference for anyone working ... Read More

In computing, a user agent is a string that a web browser or other client software sends to a web server along with each request to identify itself and its capabilities. The user agent string contains information about the browser version, operating system, device type, and other details that can ... Read More

Overview DNS records (short for "Domain Name System records") are types of data that are stored in the DNS database and used to specify information about a domain, such as its IP address and the servers that handle its email. There are several different types of DNS records, including A ... Read More

Domain Resource Records (DNS records) are entries in the Domain Name System (DNS) that specify the location of a server, the mail server responsible for a domain, or other information about a domain. There are several types of DNS records, including − A records − A records map a ... Read More

Overview The Internet Corporation for Assigned Names and Numbers (ICANN) is an international organization that plays a vital role in the functioning of the Internet. It is responsible for coordinating the maintenance and procedures of several databases related to the namespaces and numerical spaces of the Internet, including domain names ... Read More

The DNS name space is the set of all domain names that are registered in the DNS. These domain names are organized into a tree-like structure, with the top of the tree being the root domain. Below the root domain, there are a number of top-level domains, such as .com, ... Read More

The Bundle Protocol is a networking protocol used to transmit data between nodes in a delay-tolerant network. A delay-tolerant network is a type of network that can operate in environments where there is a significant delay or interruption in the flow of data. The Bundle Protocol is designed to provide ... Read More