cnp3-ebook/protocols/email — French @ Weblate: Decimal

	English	French	Actions
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	16
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	The example below, from :rfc:`4648`, illustrates the `Base64` encoding.
	Input data
	`0x14fb9c03d97e`
	8-bit
	00010100 11111011 10011100 00000011 11011001 01111110
	6-bit
	000101 001111 101110 011100 000000 111101 100101 111110
	Decimal
	5 15 46 28 0 61 37 62
	F P u c A 9 l \+
	The last point to be discussed about `base64` is what happens when the length of the sequence of bytes to be encoded is not a multiple of three. In this case, the last group of bytes may contain one or two bytes instead of three. `Base64` reserves the `=` character as a padding character. This character is used once when the last group contains two bytes and twice when it contains one byte as illustrated by the two examples below.
	0x14
	00010100
	000101 000000
	5 0
	F A \= \=
	0x14b9
	00010100 11111011
	000101 001111 101100
	5 15 44
	F P s \=
	Now that we have explained the format of the email messages, we can discuss how these messages can be exchanged through the Internet. The figure below illustrates the protocols that are used when `Alice` sends an email message to `Bob`. `Alice` prepares her email with an email client or on a webmail interface. To send her email to `Bob`, `Alice`'s client will use the Simple Mail Transfer Protocol (:term:`SMTP`) to deliver her message to her SMTP server. `Alice`'s email client is configured with the name of the default SMTP server for her domain. There is usually at least one SMTP server per domain. To deliver the message, `Alice`'s SMTP server must find the SMTP server that contains `Bob`'s mailbox. This can be done by using the Mail eXchange (MX) records of the DNS. A set of MX records can be associated to each domain. Each MX record contains a numerical preference and the fully qualified domain name of a SMTP server that is able to deliver email messages destined to all valid email addresses of this domain. The DNS can return several MX records for a given domain. In this case, the server with the lowest numerical preference is used first :rfc:`2821`. If this server is not reachable, the second most preferred server is used etc. `Bob`'s SMTP server will store the message sent by `Alice` until `Bob` retrieves it using a webmail interface or protocols such as the Post Office Protocol (:term:`POP`) or the Internet Message Access Protocol (:term:`IMAP`).
	The Simple Mail Transfer Protocol

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New source string

cnp3-ebook / protocols/email — French

New source string 3 years ago

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Glossary

English	French
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String information

Source string location

../../protocols/email.rst:276 • ../../protocols/email.rst:295 • ../../protocols/email.rst:309

String age

3 years ago

Source string age

3 years ago

Translation file

locale/fr/LC_MESSAGES/protocols/email.po, string 176