This document presents how to configure postfix to send e-mail as named " trasport" on postfix configuration. You can send e-mail to configure SMTP server on postfix configuration.
Step 1: Check your current postfix configuration
# postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 html_directory = no inet_interfaces = localhost inet_protocols = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop transport_maps = hash:/etc/postfix/transport unknown_local_recipient_reject_code = 550
Step 2: Edit main.cf config file
*You should edit main.cf config file which is located under "/etc/postfix/" directory. Open main.cf file with "vi" command and add transport option to the last line of config file.
#vi /etc/postfix/main.cf transport_maps = hash:/etc/postfix/transport
Step 3:Edit transport config file.
Also, you need to create a transport file. Just open transport file under "/etc/postfix" and find "my.domain" line and add your SMTP server.
#vi /etc/postfix/transport # my.domain : # .my.domain : # * smtp:outbound-relay.my.domain * smtp:smtpserver
Step 4: Create transport.db file
# pwd /etc/postfix [root@tokendb1 postfix]# postmap transport [root@tokendb1 postfix]# [root@tokendb1 postfix]# [root@tokendb1 postfix]# [root@tokendb1 postfix]# ls -lrt total 152 -rw-r--r--. 1 root root 12494 Feb 13 2014 virtual -rw-r--r--. 1 root root 6816 Feb 13 2014 relocated -rw-r--r--. 1 root root 5113 Feb 13 2014 master.cf -rw-r--r--. 1 root root 18287 Feb 13 2014 header_checks -rw-r--r--. 1 root root 9904 Feb 13 2014 generic -rw-r--r--. 1 root root 11681 Feb 13 2014 canonical -rw-r--r--. 1 root root 19579 Feb 13 2014 access -rw-r--r-- 1 root root 27060 Feb 29 08:31 main.cf -rw-r--r-- 1 root root 12533 Feb 29 08:33 transport -rw-r--r-- 1 root root 12288 Feb 29 08:35 transport.db
Step 5: Restart postfix service.
# service postfix restart Shutting down postfix: [ OK ] Starting postfix: [ OK ]
*Send a test e-mail
# echo 'hi'|mailx -s 'test' abdurrahim.yildirim@casesup.com
