Aupa artistas, postfix e-mail zerbitzari bet da eta konfigureku gmail-egaz e-mailek al izateko bota. Gauzie da IP dinamikotik ezindixela e-mailek bota, honegaz al izango lekidu e-mailek bota bai IP dinamiko batetik eta bai IP estatiko batetik geure gmail kontuen bidez:

• 1.- root moduen konekta:

  su
  

• 2.- paketiek instala:

  apt-get install postfix bsd-mailx openssl 
  

• 3.- postfix instalaziñuen konfigure: postfix instalakeran pregunte’kozku ia ze motatako konfiguraziñue gudun:

  sin configuración
  

• 4.- postfix konfigure: /etc/postfix/main.cf

    # SMTP relayhost
    relayhost = [smtp.gmail.com]:587  
    ## TLS Settings
    smtp_tls_loglevel = 1
    smtp_tls_CAfile = /etc/postfix/certs/CAcert.pem
    smtp_tls_cert_file = /etc/postfix/certs/mycert.pem
    smtp_tls_key_file = /etc/postfix/certs/mykey.pem
    smtp_use_tls = yes
    smtpd_tls_CAfile = /etc/postfix/certs/CAcert.pem
    smtpd_tls_cert_file = /etc/postfix/certs/mycert.pem
    smtpd_tls_key_file = /etc/postfix/certs/mykey.pem
    smtpd_tls_received_header = yes
    smtpd_use_tls = yes  
    # configuracao tls
    smtp_use_tls = yes
    smtp_sasl_auth_enable = yes
    smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
    smtp_sasl_security_options = noanonymous
    smtp_sasl_tls_security_options = noanonymous  
    # alias de mapeamento interno para externo
    smtp_generic_maps = hash:/etc/postfix/generic
  

• 5.- smtp-ientzako password-a: /etc/postfix/sasl_passwd

  [smtp.gmail.com]:587    usuaidxue@gmail.com:password-a
  

  kanbidxe zeuon datuetara

  # chmod 600 /etc/postfix/sasl_passwd
  # postmap /etc/postfix/sasl_passwd
  

• 6.- Bidaltzailie konfigure: /etc/postfix/generic

  usuaidxue@localhost.localdomain	usuaidxue@gmail.com
  

  hau pausue naiz eta derrigorrezkue ezan 1go mandan zeuok guzuiena imiñi, bigarrena bai da derrigorrezkue imintzie (gmail-en usuaidxuena)

  # chmod 600 /etc/postfix/generic
  # postmap /etc/postfix/generic
  

• 7.- Zertifikauek eta haunek upin danak konfigure:

  # mkdir /etc/postfix/certs/
  # cd /etc/postfix/certs/
  # openssl dsaparam 1024 -out dsa1024.pem
  # openssl req -x509 -nodes -days 3650 -newkey dsa:dsa1024.pem -out mycert.pem -keyout mykey.pem
  

  Hau eindxe gero dato batzuk eskatuko’zkuz, al’zuie inbenta, baie akorda gero bardiñe sartun biko’zuie eta :)
  Adibidie:

  Generating a 1024 bit DSA private key
  writing new private key to 'mykey.pem'
  -----
  You are about to be asked to enter information that will be incorporated
  into your certificate request.
  What you are about to enter is what is called a Distinguished Name or a DN.
  There are quite a few fields but you can leave some blank
  For some fields there will be a default value,
  If you enter '.', the field will be left blank.
  -----
  Country Name (2 letter code) [AU]:EU
  State or Province Name (full name) [Some-State]:Bizkaia
  Locality Name (eg, city) []:Bermeo
  Organization Name (eg, company) [Internet Widgits Pty Ltd]:hackin.badakigu
  Organizational Unit Name (eg, section) []:zital.hackin.badakigu
  Common Name (eg, YOUR name) []:zital
  Email Address []:zital@hakinbadakigu.net
  

  # openssl req -x509 -new -days 3650 -key /etc/postfix/certs/mykey.pem -out /etc/postfix/certs/mycert.pem
  

  oin ostabe lengo bardiñe:

  Generating a 1024 bit DSA private key
  writing new private key to 'mykey.pem'
  -----
  You are about to be asked to enter information that will be incorporated
  into your certificate request.
  What you are about to enter is what is called a Distinguished Name or a DN.
  There are quite a few fields but you can leave some blank
  For some fields there will be a default value,
  If you enter '.', the field will be left blank.
  -----
  Country Name (2 letter code) [AU]:EU
  State or Province Name (full name) [Some-State]:Bizkaia
  Locality Name (eg, city) []:Bermeo
  Organization Name (eg, company) [Internet Widgits Pty Ltd]:hackin.badakigu
  Organizational Unit Name (eg, section) []:zital.hackin.badakigu
  Common Name (eg, YOUR name) []:zital
  Email Address []:zital@hakinbadakigu.net
  

  # rm dsa1024.pem
  

• 8.- postfix reinizie:

  # /etc/init.d/postfix restart
  

• 9.- root modotik urten:

  exit
  

• 10.- proba :)

  $ echo "Pruebie gorputze" | mail -s "pruebie asuntue" zital@hakinbadakigu.net
  

• *.- Apunte batzuk: # gudau esan komandue root moduen idazten dotela, artxibo baten barruen badauen komentaidxue eta $ komandue usuaidxo normal moduen idazten dotela :)

• Hametik atata:
  http://www.esdebian.org/foro/19603/dudas-servidor-correo-ip-dinamicasmtp-google-solucionado