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--- linux:mailconfigwithpostfix [2014/05/22 10:54] – [test receiving mail] admin
+++ linux:mailconfigwithpostfix [2022/10/29 16:15] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+refer: http://tecadmin.net/install-and-configure-postfix-on-centos-redhat/
+email architecture: [[linux:services#email_system_in_linux|email system in linux]]\\
+http://www.postfix.org/documentation.html\\
+http://postfix.state-of-mind.de/patrick.koetter/smtpauth/sasldb_configuration.html\\
+{{:linux:postfix.ppt|postfix slide show}}
+====== Mailserver config ======
+===== install and config postfix for sending and receiving mail =====
+==== install ====
+  * install <code bash>
+yum remove sendmail
+yum install cyrus-sasl.x86_64
+yum install postfix
+</code>
+  * set MTA default to postfix<code base>
+  alternatives --set mta /usr/sbin/postfix
+  </code>
+==== config and files ====
+  * config files<code>
+/etc/sasl2/smtpd.conf
+/etc/postfix/main.cf
+</code>
+  * log<code>
+/var/log/maillog
+</code>
+  * check content of config<code bash>
+postconf
+</code>
+  * check configs which change by user(none default)<code bash>
+postconf -n
+</code>
+==== Basic config ====
+Basic config for Sending and receiving mail with UNIX system accounts
+=== What domain name to use in outbound mail ===
+Edit /etc/postfix/main.cf:
+<code bash>
+myhostname = mail.babies.vn
+mydomain = babies.vn
+myorigin = $mydomain
+inet_interfaces = all
+</code>
+The **myorigin** parameter specifies the domain that appears in mail that is posted on this machine. Follow this configuration, send mail as "user@$mydomain"
+To **secure the mailserver was can't be used by other server**, you can config inet_interfaces to localhost:<code bash>
+inet_interfaces = localhost
+</code>
+=== what domains this machine will deliver locally ===
+The **mydestination** parameter specifies what domains this machine will deliver locally, instead of forwarding to another machine.
+Edit /etc/postfix/main.cf:
+<code bash>
+mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
+</code>
+==== Active config in postfix ====
+<code bash>
+serivce postfix restart
+chkconfig postfix on
+</code>
+==== test sending and receiving mail ====
+=== setup sendmail program: mailx ===
+<code bash>
+yum install mailx
+yum install sendmail
+</code>
+=== test sending mail ===
+<code bash>
+mail anh.vochi@gmail.com
+Subject: Test
+This is a email test
+#Ctr+D
+</code>
+=== test receiving mail ===
+Using gmail anh.vochi@gmail.com send to root@babies.vn and sale@babies.vn
+  * Check receiving mail base on maillog: /var/log/maillog
+    * log for mailto root@babies.vn: status=sent (delivered to mailbox)<code>
+May 22 05:39:52 mail postfix/smtpd[4228]: connect from mail-qg0-f43.google.com[209.85.192.43]
+May 22 05:39:52 mail postfix/smtpd[4228]: C968340900: client=mail-qg0-f43.google.com[209.85.192.43]
+May 22 05:39:53 mail postfix/cleanup[4232]: C968340900: message-id=<CADwQOAhT-WZ2wBRmXx0eDsJvTK5FtqauqryDDPgDCA7PYed3tw@mail.gmail.com>
+May 22 05:39:53 mail postfix/qmgr[4141]: C968340900: from=<anh.vochi@gmail.com>, size=2268, nrcpt=1 (queue active)
+May 22 05:39:53 mail postfix/local[4233]: C968340900: to=<root@babies.vn>, relay=local, delay=0.74, delays=0.71/0.02/0/0.01, dsn=2.0.0, status=sent (delivered to mailbox)
+May 22 05:39:53 mail postfix/qmgr[4141]: C968340900: removed
+May 22 05:39:53 mail postfix/smtpd[4228]: disconnect from mail-qg0-f43.google.com[209.85.192.43]
+    </code>
+    * log for mailto sale@babies.vn: <sale@babies.vn>: Recipient address rejected: User unknown in local recipient table<code>
+May 22 05:43:13 mail postfix/anvil[4230]: statistics: max connection rate 1/60s for (smtp:209.85.192.43) at May 22 05:39:52
+May 22 05:43:13 mail postfix/anvil[4230]: statistics: max connection count 1 for (smtp:209.85.192.43) at May 22 05:39:52
+May 22 05:43:13 mail postfix/anvil[4230]: statistics: max cache size 1 at May 22 05:39:52
+May 22 05:43:58 mail postfix/smtpd[4247]: connect from mail-qc0-f179.google.com[209.85.216.179]
+May 22 05:43:59 mail postfix/smtpd[4247]: NOQUEUE: reject: RCPT from mail-qc0-f179.google.com[209.85.216.179]: 550 5.1.1 <sale@babies.vn>: Recipient address rejected: User unknown in local recipient table; from=<anh.vochi@gmail.com> to=<sale@babies.vn> proto=ESMTP helo=<mail-qc0-f179.google.com>
+May 22 05:43:59 mail postfix/smtpd[4247]: disconnect from mail-qc0-f179.google.com[209.85.216.179]
+</code>
+  * check mail content received in "mail_spool_directory = /var/mail"<code bash>
+cat /var/mail/root
+</code>Or<code bash>
+mail
+</code>
+==== config user anh.vochi@gmail.com can send mail to sale@babies.vn, base on UNIX system account====
+Default , we can send mail to root@babies.vn. But we can't send mail to sale@babies.vn. Below are steps forward emails of sale@babies.vn to sale UNIX system account(sale is UNIX system account)
+=== config ===
+[/etc/postfix/main.cf]
+  virtual_alias_maps = hash:/etc/postfix/virtual
+[/etc/postfix/virtual]
+  sale@babies.vn sale, anh.vochi@gmail.com, tranvungoctram@gmail.com, trinhmigoi@yahoo.com
+=== Active changes in config ===
+  - run scripts below:<code bash>
+postmap /etc/postfix/virtual
+#=> generate /etc/postfix/virtual.db
+</code>
+  - reload postfix: /etc/init.d/postfix reload
+  - check config:<code bash>
+postmap -q sale@babies.vn hash:/etc/postfix/virtual
+</code>
+  - Using anh.vochi@gmail.com send mail to sale@babies.vn
+==== Check Mail Server Storage(MSS) for Receiving Email which postfix support ====
+<code bash>
+postconf -a
+cyrus
+dovecot
+</code>
+===== Install and config Mail Server Storage with cyrus for Mail client connecting =====
+<code>
+               ------------------
+Incoming Mail |--+     Postfix  <-----------| Outgoing Mail  |
+                -|----------------                     |
+                ||     LMTP      |                     |
+                -|----------------                     |
+                |+>    Cyrus    +----------------+     |
+                |+>    Imapd    ||---->+         |     |
+                -|--------------|-     |         |     |
+                ||Authentication||    2|        1|     |
+                |+<    SASL    <+|     v         ^     |
+                ------------------     |Receiving|  |Sending|
+                                           |           |
+                                       +--------------------+
+                                       |     Mail Client    |
+</code>
+==== Install cyrus ====
+<code bash>
+yum install cyrus-imapd.x86_64
+</code>
+==== config postfix connect with cyrus via lmtp(local mail transfer protocol) ====
+=== config postfix ===
+<code bash>
+postconf -e "mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp"
+</code>
+=== config cyrus ===
+[/etc/cyrus.conf]\\
+  lmtpunix      cmd="lmtpd" listen="/var/lib/imap/socket/lmtp" prefork=1
+=== active changes in config ===
+<code bash>
+/etc/init.d/postfix restart
+/etc/init.d/cyrus-imapd restart
+chkconfig postfix on
+chkconfig cyrus-imapd on
+</code>
+==== Config Cyrus-Imapd for domain and mail client authentication ====
+[/etc/imapd.conf]
+<code>
+admins: cyrus cyrusadm
+</code>