Changes in Postfix for Ubuntu 9.10
September 25, 2009 Postfix Configuration
The postcont -n command for Postfix shows you changes made to the default configuration. Here is a listing of the new Ubuntu 9.10 and the output for Postfix. As you can see nothing too significant except you see a focus on TLS for secure communication which is great, however this really needs to be addressed for users from the client side as TLS is still a problem with some clients. The other change you see with Ubuntu 9.10 is there is no limit to mailbox size which by default is limited to 50 MB. As an admin you will want to keep this in mind as no mailbox limits could bite you if you are not careful.
postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_size_limit = 0
mydestination = ub910, localhost.localdomain, , localhost
myhostname = ub910
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
