Apple Mac OS X Server Version 10.4 or Later Manual de usuario Pagina 22

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22 Chapter 1 Mail Service Setup
How Mail Service Uses SSL
Secure Sockets Layer (SSL) connections ensure that the data sent between your mail
server and your users mail clients is encrypted. This allows secure and confidential
transport of mail messages across a local network. SSL transport doesn’t provide secure
authentication, just secure transfer from your mail server to your clients. See the Open
Directory administration guide for secure authentication information.
For incoming mail, the mail service supports secure mail connections with mail client
software that requests them. If a mail client requests an SSL connection, the mail
service can automatically comply, if that option has been enabled. The mail service still
provides non-SSL (unencrypted) connections to clients that don’t request SSL. The
configuration of each mail client determines whether it connects with SSL or not.
For outgoing mail, the mail service supports secure mail connections between SMTP
servers. If an SMTP server requests an SSL connection, the mail service can
automatically comply, if that option has been enabled. The mail service still can allow
non-SSL (unencrypted) connections to mail servers that don’t request SSL.
Enabling Secure Mail Transport With SSL
The mail service requires some configuration to provide SSL connections automatically.
The basic steps are as follows:
Step 1: Obtain a security Certificate
This can be done in three ways:
1 Get a certificate from a Certificate Authority.
a Generate a Certificate Signing Request (CSR) and create a keychain.
b Use the CSR to obtain a Certificate from an issuing Certificate Authority.
2 Create a self-signed certificate in Server Admin’s Certificate Manager.
3 Locate an existing certificate from a previous Mac OS X Server version 10.3 installation.
If you already have generated a security certificate in a previous version of Mac OS X
Server, you can import it for use.
See Appendix, “Certificates and Security on page 93 for more information.
Step 2: Import the Certificate into Server Admin’s Certificate Manager
You can either use the Certificate Manager to drag and drop Certificate information, or
point the manager to an existing installed certificate.
See Appendix, “Certificates and Security on page 93 for more information.
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