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informatique:reseau:postfix

Postfix

Tips

Gérer la pile de mails

Voir le contenu de la pile (queue):

# mailq

Forcer l'envoi (tentative) des mails:

# postfix flush
(Force delivery: attempt to deliver every message in the deferred mail queue. Normally, attempts to deliver delayed mail happen at regular intervals, the interval doubling after each failed attempt. Warning: flushing undeliverable mail frequently will result in poor delivery performance of all other mail.

Pour effacer les mails dans la pile:

To remove all mail from the queue, enter:

# postsuper -d ALL

To remove all mails in the deferred queue, enter:

# postsuper -d ALL deferred

See more:

rewrite the Sender/From

méthode #1

dans le fichier de configuration principal /etc/postfix/main.cf :

append_dot_mydomain = yes

méthode #2 smtp_generic_maps

Sub mon Ubuntu les mails envoyés de la console partaient avec from=<cyrille@cyrille-W740SU> …

Création du fichier /etc/postfix/generic:

Édition:

cyrille@cyrille-W740SU  w740su@giquello.fr

Compiler la table

sudo postmap /etc/postfix/generic

Ajouter sa réf dans /etc/postfix/main.cf

smtp_generic_maps = hash:/etc/postfix/generic

Redémarrer postfix

sudo service postfix restart

Et voilà, maintenant les mails arrivent dans les boites avec from w740su@giquello.fr

méthode #3 sender_canonical

PAS TESTÉE

Avec une table canonique de re-écriture:

/etc/postfix/sender_canonical, and add user → email references like this:

infinito infinito@hotmail.com

Donc dans mon cas :

tripwire tripwire@artefacts.coop

Restrictions

Difference entre smtpd_client_restrictions et smtpd_recipient_restrictions
`client' est le nom de la machine qui se connecte au serveur Postfix (le client SMTP). On peut restreindre l'accès selon certains critères.
`recipient' est l'adresse du destinataire dans l'enveloppe du message. On peut restreindre l'accès selon d'autres critères.

Les restrictions correspondent grosso-modo à l'ordre des commandes SMTP : (client) HELO, MAIL FROM, RCPT TO, DATA.

Il faut savoir que, par défaut, Postfix applique les restrictions listées uniquement à l'étape RCPT TO, même si une règle aurait arrêté la connexion avant. Il est donc possible de mettre toutes les restrictions dans la variable `smtpd_recipient_restrictions'.

Stats tools

Mailgraph: Mailgraph is a very simple mail statistics RRDtool frontend for Postfix and Sendmail that produces daily, weekly, monthly and yearly graphs of received/sent and bounced/rejected mail.

Pflogsumm: The Postfix Log Entry Summarizer

Isoqlog: Isoqlog is an MTA log analysis program written in C. It designed to scan QMail, Postfix, Sendmail and exim logfile and produce usage statistics in HTML format for viewing through a browser. It produces Top domains output according to Sender, Receiver, Total mails and bytes; it keeps your main domain mail statistics with regard to Days Top Domain, Top Users values for per day, per month and years.

Dovecot SASL configuration for the Postfix SMTP server

In order to enable SASL support in the Postfix SMTP server:

  /etc/postfix/main.cf:
      smtpd_sasl_auth_enable = yes

In order to allow mail relaying by authenticated remote SMTP clients:

  /etc/postfix/main.cf:
      smtpd_recipient_restrictions = 
          permit_mynetworks 
          permit_sasl_authenticated 
          reject_unauth_destination

Dovecot SASL support is available in Postfix 2.3 and later. On the Postfix side you need to specify the location of the Dovecot authentication daemon socket. We use a pathname relative to the Postfix queue directory, so that it will work whether or not the Postfix SMTP server runs chrooted:

  /etc/postfix/main.cf:
      smtpd_sasl_type = dovecot
      smtpd_sasl_path = private/auth

On the Dovecot side you also need to specify the Dovecot authentication daemon socket. In this case we specify an absolute pathname. In the example we assume that the Postfix queue is under /var/spool/postfix/.

  /some/where/dovecot.conf:
      auth default {
        mechanisms = plain login
        passdb pam {
        }
        userdb passwd {
        }
        socket listen {
          client {
            path = /var/spool/postfix/private/auth
            mode = 0660
            user = postfix
            group = postfix
          }
        }
      }

See the Dovecot documentation for how to configure and operate the Dovecot authentication server.

Non-Unix users

SpamAssassin et ClamAV

LDAP

informatique/reseau/postfix.txt · Dernière modification: 24/02/2016 15:35 par cyrille