#Defualt postfix config macos server 5.4 update
#Defualt postfix config macos server 5.4 code

Hide the sender's IP and user agent in the Received header Smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/blacklist_incoming

#Defualt postfix config macos server 5.4 code

Then use the postmap command to create a database:Īdd the following code before the first permit rule in main.cf: Manually blacklisting incoming emails by sender address can easily be done with Postfix.Ĭreate and open /etc/postfix/blacklist_incoming file and append sender email REJECT Tips and tricks Blacklist incoming emails The rationale surrounding the $smtpd_*_restrictions lines is the same as above. o smtpd_relay_restrictions=permit_sasl_authenticated,reject etc/postfix/master.cf submissions inet n - n - smtpd To enable SMTPS (port 465), uncomment the following lines in master.cf: If you do decide to set any of $mua_*_restrictions, uncomment those lines too. The smtpd_*_restrictions options remain commented because $mua_*_restrictions are not defined in main.cf by default.

o smtpd_recipient_restrictions=permit_sasl_authenticated,reject # -o smtpd_sender_restrictions=$mua_sender_restrictions # -o smtpd_helo_restrictions=$mua_helo_restrictions # -o smtpd_client_restrictions=$mua_client_restrictions etc/postfix/master.cf submission inet n - n - smtpd To enable STARTTLS over SMTP (port 587), uncomment the following lines in master.cf: The latter was previously deprecated but was reinstated by RFC:8314. STARTTLS over SMTP (port 587) and SMTPS (port 465). There are two ways to accept secure mail. etc/postfix/main.cf smtpd_tls_security_level = may Point Postfix to your TLS certificates by adding the following lines to main.cf: For more information see Server-side TLS.īy default, Postfix will not accept secure mail. Since mid-2015, the default settings have been safe against POODLE. Warning: If you deploy TLS, be sure to follow 's guide to prevent FREAK/Logjam. To see how you differ from the defaults, try postconf -n. To see all of your configs, type postconf. It should output anything that you might have done wrong in a configuration file. etc/postfix/main.cf virtual_alias_maps = hash:/etc/postfix/virtual Set up a virtual alias for a single address. This can be used to rewrite the destination address for a single recipient, or an entire domain. Virtual aliases are used to rewrite the destination addresses for all local, virtual and remote destinations. Virtual mail is mail that does not map to a user account ( /etc/passwd). After setting up the above configuration file, you may wish to set up some #Aliases and then #Start Postfix. Mydestination = $myhostname, localhost.$mydomain, localhostĭefault_transport = error: outside mail is not deliverableĪll other settings may remain unchanged. Uncomment, change, or add the following lines:

#Defualt postfix config macos server 5.4 update

To only deliver mail to local system users (that are in /etc/passwd) update /etc/postfix/main.cf to reflect the following configuration. Specify the user to whom root mail should be forwarded, e.g. Tip: Alternatively you can create the file ~/.forward, e.g.

Once you have finished editing /etc/postfix/aliases you must run the postalias command: Uncomment the following line, and change you to a real account. You should map all mail addressed to root to another account since it is not a good idea to read mail as root. You can specify aliases (also known as forwarders) in /etc/postfix/aliases. main.cf, the main configuration file, see postconf(5)Ĭonfiguration changes need a rvice reload in order to take effect.master.cf, defines what Postfix services are enabled and how clients connect to them, see master(5).Configuration files are in /etc/postfix by default. There are instructions for setting up local system user-only delivery and a link to a guide for virtual user delivery. The goal of this article is to setup Postfix and explain what the basic configuration files do. Thus, the outside has a sendmail-ish flavor, but the inside is completely different. Postfix is a mail transfer agent that according to its website:Īttempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users.