Hi All,<\/p>\n
Today We are going to see how to install Dovecot on Cent OS.<\/p>\n
Now install Dovecot using the following command:<\/p>\n
yum -y install<\/span> dovecot\r\n<\/code><\/pre>\nOnce Dovecot is installed, edit the following file using your favorite editor.<\/p>\n
nano<\/span> \/etc\/dovecot\/conf.d\/10-master.conf\r\n<\/code><\/pre>\nand find the following lines:<\/p>\n
# Postfix smtp-auth<\/span>\r\n<\/code><\/pre>\nNow Append the following lines, just below these lines:<\/p>\n
# Postfix smtp-auth<\/span>\r\n unix_listener \/var\/spool\/postfix\/private\/auth {<\/span>\r\n mode =<\/span> 0660\r\n user =<\/span> postfix\r\n group =<\/span> postfix\r\n }<\/span>\r\n<\/code><\/pre>\nNow open another configuration using the following command.<\/p>\n
nano<\/span> \/etc\/dovecot\/conf.d\/10-auth.conf\r\n<\/code><\/pre>\nand find the following lines.<\/p>\n
# Space separated list of wanted authentication mechanisms:<\/span>\r\n # plain login digest-md5 cram-md5 ntlm rpa apop anonymous gssapi otp skey<\/span>\r\n # gss-spnego<\/span>\r\n # NOTE: See also disable_plaintext_auth setting.<\/span>\r\n auth_mechanisms =<\/span> plain\r\n<\/code><\/pre>\nAppend\u00a0login<\/code>\u00a0at the end of the line\u00a0auth_mechanisms = plain<\/code>\u00a0to make it look like<\/p>\n auth_mechanisms =<\/span> plain login\r\n<\/code><\/pre>\nAgain edit\u00a0\/etc\/dovecot\/conf.d\/10-mail.conf<\/code>\u00a0file using your favorite editor.<\/p>\n nano<\/span> \/etc\/dovecot\/conf.d\/10-mail.conf\r\n<\/code><\/pre>\nFind the following lines<\/p>\n
# <\/span>\r\n #<\/span>\r\n #mail_location =<\/span>\r\n<\/code><\/pre>\nNow add the following line just below these lines:<\/p>\n
mail_location =<\/span> maildir:~\/mail\r\n<\/code><\/pre>\nNow edit\u00a0\/etc\/dovecot\/conf.d\/20-pop3.conf<\/code>\u00a0using your favorite editor.<\/p>\n nano<\/span> \/etc\/dovecot\/conf.d\/20-pop3.conf\r\n<\/code><\/pre>\nand find the following lines.<\/p>\n
#pop3_uidl_format = %08Xu%08Xv<\/span>\r\n<\/code><\/pre>\nUncomment the above line to make it look like as shown below.<\/p>\n
# Note that Outlook 2003 seems to have problems with %v.%u format which was<\/span>\r\n # Dovecot's default, so if you're building a new server it would be a good<\/span>\r\n # idea to change this. %08Xu%08Xv should be pretty fail-safe.<\/span>\r\n #<\/span>\r\n pop3_uidl_format =<\/span> %08Xu%08Xv \r\n<\/code><\/pre>\nNow restart postfix, and dovecot using the following command.<\/p>\n
systemctl restart postfix\r\n systemctl enable<\/span> postfix\r\n systemctl restart dovecot\r\n systemctl enable<\/span> dovecot\r\n<\/code><\/pre>\nNow if you have a firewall running you will need to allow port number 25, 587, 465, 110, 143, 993, 995 and 80. All the ports except 80 are used to send and receive emails and port 80 is used to make HTTP connections. HTTP connections will be used to access Squirrelmail using web interface.<\/p>\n
To unblock all these ports from firewall, run the following commands.<\/p>\n
firewall-cmd --permanent --add-service=<\/span>smtp\r\n firewall-cmd --permanent --add-port=<\/span>587\/tcp\r\n firewall-cmd --permanent --add-port=<\/span>465\/tcp\r\n firewall-cmd --permanent --add-port=<\/span>110\/tcp\r\n firewall-cmd --permanent --add-service=<\/span>pop3s\r\n firewall-cmd --permanent --add-port=<\/span>143\/tcp\r\n firewall-cmd --permanent --add-service=<\/span>imaps\r\n firewall-cmd --permanent --add-service=<\/span>http\r\n firewall-cmd --reload\r\n<\/code><\/pre>\nTesting Postfix and Dovecot<\/h3>\n
You can check if Postfix is working by executing the following command in your terminal.<\/p>\n
telnet mail.yourdomain.com smtp\r\n<\/code><\/pre>\nIf you do not have telnet installed, then you can run the following command to install telnet.<\/p>\n
yum -y install<\/span> telnet\r\n<\/code><\/pre>\nOnce you are connected using telnet you will see following output.<\/p>\n
Trying ::1..<\/span>.\r\n Connected to localhost.\r\n Escape character is '^]'<\/span>.<\/span>\r\n 220 mail.rackvoucher.com ESMTP Postfix\r\n<\/code><\/pre>\nNow you can also send email using telnet. Use the following command to enter the sender username.<\/p>\n
mail from:\r\n<\/code><\/pre>\nTo enter the email of recipient, you can use the use the following command.<\/p>\n
rcpt to:\r\n<\/code><\/pre>\nTo enter the body of email, enter the following command.<\/p>\n
data\r\n<\/code><\/pre>\nOnce you have entered your message, enter dot (.) to finish the message. Finally enter\u00a0quit<\/code>\u00a0to exit telnet.<\/p>\nTo test Dovecot, enter the following command.<\/p>\n
telnet mail.yourdomain.com pop3\r\n<\/code><\/pre>\nYou will see following output,<\/p>\n
Trying 104.36.18.239..<\/span>.\r\n Connected to mail.rackvoucher.com.\r\n Escape character is '^]'<\/span>.<\/span>\r\n +OK Dovecot ready.\r\n<\/code><\/pre>\nIt tells that Dovecot is working fine, you can login to your mail account by providing\u00a0login<\/code>\u00a0command, then use\u00a0pass<\/code>\u00a0command to enter your password. To view the mails in your account, use\u00a0retr<\/code>\u00a0command.<\/p>\n user mailuser\r\n +OK\r\n pass Password\r\n +OK Logged in.\r\n retr\r\n -ERR There's no message 1.\r\n quit\r\n +OK Logging out.\r\n Connection closed by foreign host.<\/code><\/pre>\n <\/p>\n
Thanks for reading this tutorial \ud83d\ude42<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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