CentOS simple email server Construction

In CentOS5.564bit, postfix + dovecot + sasl2 + webmail, mail authentication, and email account usageSystem user name.

The Simple Mail Server is not a professional set up of a complete enterprise mailbox. It is not installed on mailcharts, spam, and fprot! Including mysql authentication.

Environment:

CentOS5.564bit

Enterprise Domain Name monoedu.com

Mail.monoedu.com

Mail Server Name: mail.monoedu.com

Ip: 210.14.78.1 *

Note:DNSRequired. See other configuration documents.

1. Install Postfixsasl2dovecot

[Root @ mail ~] # Yuminstallpostfixcycus-sasl * dovecot

2. Configuration

[Root @ mail ~] # Vi/etc/postfix/main. cf

The modification content is as follows:

Myhostname = mail.monoedu.com

Mydomain = monoedu.com

Myorigin = $ mydomain

Inet_interfaces = all

Mydestination = $ myhostname, localhost. $ mydomain, localhost, $ mydomain,

Mail. $ mydomain,Www. $ mydomain,Ftp. $ mydomain

Mynetworks_style = subnet // specify the IP address of the whole network. These two parameter settings are very important (below)

Mynetworks = 127.0.0.0/8, localhost, 210.14.78.0/24 // generally, smtp is not used because no

Relay_domains = $ mydestination

Home_mailbox = Maildir // if the system account is used as the Mail User Name, this directory is the directory under the Account

Add at the end (sasl encryption algorithm supported)

Smtpd_sasl_auth_enable = yes

Smtpd_sasl_security_options = noanonymous

Broken_sasl_auth_clients = yes
Smtpd_recipient_restrictions = permit_sasl_authenticated, reject_unauth_destination, permit_mynetworks

Smtpd_client_restrictions = permit_sasl_authenticated

Select an available MTA from the command line

[Root @ mail ~] # Alternatives -- configmta

Thereare2programswhichprovide 'mta '.

SelectionCommand

-----------------------------------------------

* + 1/usr/sbin/sendmail. postfix

Entertokeepthecurrentselection [+], ortypeselectionnumber:1

[Root @ mail ~] #Vi/etc/sysconfig/saslauthd

SOCKETDIR =/var/run/saslauthd

MECH = shadow // use the system account for verification

[Root @ mail ~] # Vi/usr/lib/sasl2/smtpd. conf

Modify or add

Pwcheck_method: saslauthd

Mech_list: PLAINLOGIN

Log_level: 3

[Root @ mail ~] # Vi/etc/dovecot. conf

Modify or add

Protocols = imappop3pop3s

Listen = *

[Root @ mail ~] #/Etc/init. d/postfixstart | stop | restart

[Root @ mail ~] #/Etc/init. d/dovecotstart | stop | restart

[Root @ mail ~] #/Etc/init. d/saslauthdstart | stop | restart

3. Set auto-start upon startup

[Root @ mail ~] # Chkconfig-level345postfixon

[Root @ mail ~] # Chkconfig-level345dovecoton

[Root @ mail ~] # Chkconfig-level345saslauthdon

4. Add an account

(1) Create a system account first

[Root @ mail ~] # Useradd-s/bin/nologin-mtest

[Root @ mail ~] # Passwdtest //PasswordTest

(2) Add an email account

[Root @ mail ~] #/Usr/sbin/testsaslauthd-utest-ptest

The user name and password used in the preceding step. The system must have this user and the corresponding password; otherwise, an error will be reported.

Return Value:OK,Successd, Executed successfully.

5. foxmail Test

Add an account: pop3stmp must be set to the domain name address (mail.monoedu.com)

Finally, you can test the mail server through clients such as outlook and foxmail.