E-mail Storage How To - Version 8.0.0
Chapter 2. E-mail Server
© VASCO Data Security 2014
8
The use of certificates is explained in the PKI How To.
2.5.2. Configuration
1. Navigate to E-mail
⇒
POP3 / IMAP
2. Select the appropriate option for TLS
3. Click on update to save your settings
Figure 2.6. POP3 and IMAP TLS Settings
Parameter
Description
No TLS
TLS is not used.
Opportunistic
TLS
The AXS GUARD announces TLS support to the clients, but does not require its use.
Mandatory
TLS
POP and IMAP clients must use TLS.
Table 2.1. POP3 and IMAP TLS Settings
2.6. E-mail Envelope, Header and Body
2.6.1. Overview
The key idea in e-mail systems is the distinction between the envelope and its contents, which we explain
in the following sections.
2.6.2. Mail Envelope
The envelope encapsulates the message. It contains all the information needed for transporting the message,
such as the destination address, the message priority, etc. This information stands on its own and is distinct
from the message itself. The Message Transport Agents (MTAs) use the envelope for routing, just as the post
office does. A new envelope is created per recipient.
2.6.3. Header and Body
The message inside the envelope consists of two parts: the header and the body. The header contains control
information for the user agents (see
Table 2.2, “Connection Settings”
). The body is intended for the human
recipient. The body is the message itself, which can be formatted in plain text or HTML. The difference between
paper mail (a) and e-mail (b) is illustrated below.
Содержание Personal aXsGUARD
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