Linux and Cloud computing--the second phase of Linux Server Setup
The
nineth Chapter:Mail e-mail server Setup-Configure SSL-based mail servers and the use of virtual domains
Mail Client Configuration
can be self Select the email client to set according to the configuration of the server. It is recommended to use client software such as Foxmail or Outlook .
Configure SSL
Configuration SSL come to Encrypted Connection . SMTPS using port 465/tcp, pop3s using port 995/tcp, IMAPS using port 993/tcp.
[1]
Create a certificate
[2]
Give
Postfix
and the
Dovecot
Configuration
SSL.
[Email protected] ~]# VI/ETC/POSTFIX/MAIN.CF
# at the end of the add following content
Smtpd_use_tls = yes
Smtpd_tls_cert_file =/etc/pki/tls/certs/server.crt
Smtpd_tls_key_file =/etc/pki/tls/certs/server.key
Smtpd_tls_session_cache_database = Btree:/etc/postfix/smtpd_scache
[Email protected] ~]# VI/ETC/POSTFIX/MASTER.CF
# line 26-28: Cancel Comment
Smtps inet n-n--SMTPD
-O Syslog_name=postfix/smtps
-O Smtpd_tls_wrappermode=yes
[Email protected] ~]# vi/etc/dovecot/conf.d/10-ssl.conf
# line 8: Modify
SSL = yes
# line 14,15: Specify certificate File
Ssl_cert = </etc/pki/tls/certs/server.crt
Ssl_key = </etc/pki/tls/certs/server.key
[Email protected] ~]# systemctl restart Postfix
[Email protected] ~]# systemctl restart Dovecot
[3]
within the client
Select
SMTP and IMAP use TLS/SSL
Virtual Domain
Configuration Postfix come to use a virtual domain to send a message with a different name from your Origin domain.
For example,
present domain name example.com
New domain name Virtual.host
a user [Jeffrey] have a email address [[email protected]],
a users [Redhat] have a an email address [[email protected]],
User [Redhat] also use the same name for before [@] with [Jeffrey].
[1]
Configure virtual
Domain
[Email protected] ~]# VI/ETC/POSTFIX/MAIN.CF
# in the Add the following section at the end of the file
Virtual_alias_domains = Virtual.host
Virtual_alias_maps = hash:/etc/postfix/virtual
[Email protected] ~]# vi/etc/postfix/virtual
# in the file Add the following above
[Email protected] Redhat
[Email protected] ~]# postmap/etc/postfix/virtual
[Email protected] ~]# Systemctl reload Postfix
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Linux and cloud Computing-phase nineth: Mail e-mail server Setup-Configure SSL-based mail servers and use of virtual domains