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MIME is a way to encode binary files for transmission over the internet, so that they can be sent as part of email messages. It allows users to send and receive files of different types, such as images, audio, video, and other multimedia content, as well as plain text and other types of documents. MIME is used to specify the type of content being sent, as well as to provide additional information about the content, such as the name of the file, the character set being used, and the encoding method. MIME is implemented in most email clients and web ... Read More
Outbound SMTP (Simple Mail Transfer Protocol) extensions are optional features that can be used to improve the functionality of email messages. These extensions are negotiated between the sending and receiving mail servers during the SMTP conversation, which occurs when an email is sent from one server to another. Outbound SMTP extensions that have been defined, including 8BITMIME − Allows 8-bit data to be transmitted over SMTP, allowing for the use of non-ASCII characters in email messages. BINARYMIME − Allows binary data to be transmitted as part of an email message. CHUNKING − Allows large messages to be sent in ... Read More
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 command stream to indicate support for a particular extension or to provide additional information needed to use the extension. List of SMTP Service Extension Parameters Here is a list of some common SMTP service extensions − EHLO (Extended Hello) − This extension allows an SMTP client to negotiate the ... 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 exchange of email messages. In ESMTP, additional commands and functionality are added to the original SMTP protocol to allow for the exchange of more complex email messages, such as messages with attachments or messages in different character sets. ESMTP also includes mechanisms for negotiating the use of these additional features ... 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 6 bits. Each group is then represented by a printable ASCII character. There are 64 characters in the Base64 "alphabet", which is why it is called Base64. The characters used are A-Z, a-z, 0-9, +, and /. For example, the letter 'A' in Base64 is represented as 'QQ==', and the ... 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 with email or other internet messages. It is also known as the Internet Message Format Standard. Here are a few more points about RFC 5322 − It replaces an earlier standard called RFC 822, which was published in 1982. It is written in ... 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 be used to identify the client. Web servers use this information to tailor their responses to the specific client, such as by sending back content that is optimized for the client's device type or by modifying the layout of the content to better fit the client's display size. The user ... 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 records, MX records, CNAME records, and others, each with its own specific purpose. A record (short for "address record") maps a domain or subdomain to an IP address. For example, the domain "example.com" might have an A record that maps it to the IP address "192.0.2.1". When someone types "example.com" ... 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 domain name to an IP address. CNAME records − CNAME records allow you to specify an alias for a domain name. MX records − MX records specify the mail server responsible for a domain. NS records − NS records specify the name servers for a domain. TXT records − TXT ... 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 and IP addresses. In this article, we will take a closer look at what ICANN is, what it does, and how it impacts the daily use of the Internet. Internet First, it is important to understand the basic structure of the Internet. At its most basic level, the Internet is ... Read More