Install postfix-based full-featured email server on linux (2)

Article Title: Install postfix-based full-featured email server on linux (2 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

8. Enable cyrus-sasl-based authentication for postfix

Run the following command to check whether the postfix supports cyrus-style sasl authentication. If your output is the following result, it is supported:

#/Usr/local/postfix/sbin/postconf-

Cyrus

Dovecot

# Vi/etc/postfix/main. cf

Add the following content:

############################ CYRUS-SASL ########### #################

Broken_sasl_auth_clients = yes

Expiration = permit_mynetworks, permit_sasl_authenticated, reject_invalid_hostname, reject_non_fqdn_hostname, expiration, reject_unauth_pipelining, reject_unauth_destination

Smtpd_sasl_auth_enable = yes

Smtpd_sasl_local_domain = $ myhostname

Smtpd_sasl_security_options = noanonymous

Smtpd_sasl_application_name = smtpd

Smtpd_banner = Welcome to our $ myhostname ESMTP, Warning: Version not Available!

# Vi/usr/local/lib/sasl2/smtpd. conf

Add the following content:

Pwcheck_method: saslauthd

Mech_list: PLAIN LOGIN

Reload the configuration file with postfix

#/Usr/local/postfix/sbin/postfix reload

9. Enable postfix to support virtual domains and virtual users

1. edit/etc/postfix/main. cf and add the following content:

######################## Virtual Mailbox Settings ############# ###########

Virtual_mailbox_base =/var/spool/mail

Virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf

Virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf

Virtual_alias_domains =

Virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf

Virtual_uid_maps = static: 2525

Virtual_gid_maps = static: 2525

Virtual_transport = virtual

Maildrop_destination_recipient_limit = 1

Maildrop_destination_concurrency_limit = 1

########################## QUOTA Settings ############ ############

Message _ size_limit = 14336000

Virtual_mailbox_limit = 20971520

Virtual_create_maildirsize = yes

Virtual_mailbox_extended = yes

Virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf

Virtual_mailbox_limit_override = yes

Virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please Tidy your mailbox and try again later.

Virtual_overquota_bounce = yes

2. Add the configuration files used to support virtual domains and virtual users.

Edit/etc/postfix/mysql_virtual_alias_maps.cf and add the following content:

User = extmail

Password = extmail

Hosts = localhost

Dbname = extmail

Table = alias

Select_field = goto

Where_field = address

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