Postfix osnovna konfiguracija

/etc/postfix/main.cf:

 myorigin = $myhostname (default: send mail as "user@$myhostname")
    myorigin = $mydomain   (probably desirable: "user@$mydomain")

Kad mejl posalje korisnik, šalje ga kao korisnik@myorigin

--------------------------------------------

/etc/postfix/main.cf:
    mydestination = $myhostname localhost.$mydomain localhost

Ako je mejl upucen na korisnik@mydestination, takav mejl će ostati na serveru, tj. ubaciće se u fajl na ovom serveru za nalog: korisnik.

Ako je server glavni mail server za domen, treba ubaciti:

    mydestination = $myhostname localhost.$mydomain localhost $mydomain

---------------------------------------------

 /etc/postfix/main.cf:

    mynetworks_style = subnet  (default: authorize subnetworks)
    mynetworks_style = host    (safe: authorize local machine only)
    mynetworks = 127.0.0.0/8   (safe: authorize local machine only)
    mynetworks = 127.0.0.0/8 168.100.189.2/32 (authorize local machine) 

Samo za SMTP klijente iz mreže mynetworks će se prosleđivati mejlove ka bilo kome.

---------------------------------------------

/etc/postfix/main.cf:
    relay_domains = $mydestination (default)
    relay_domains =           (safe: never forward mail from strangers)
    relay_domains = $mydomain (forward mail to my domain and subdomains)

Server će proslediti mejlove od neautorizovanih klijenata(klijenti koji nisu u mynetworks) samo ka autorizovanim udaljenim destinacijama koje se definišu u relay_domains parametru

---------------------------------------------

/etc/postfix/main.cf:
    relayhost =                   (default: direct delivery to Internet)
    relayhost = $mydomain         (deliver via local mailhub)
    relayhost = [mail.$mydomain]  (deliver via local mailhub)
    relayhost = [mail.isp.tld]    (deliver via provider mailhub)

Server pokušava da isporuči mejlove direktno na internet, osim ako se u relayhost ne specificira drugačije.

---------------------------------------------

/etc/aliases:
    postmaster: you
    root: you

pokrene se komanda newaliases

Umesto you upisuje se u aliases email adresa administratora servera.

--------------------------------------------

/etc/postfix/main.cf:
    proxy_interfaces = 1.2.3.4 (the proxy/NAT external network address)

Ako je Server iza PROXY-ja podešavaju se eksterna adresa PROXY servera.

------------------------------------------------

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