# Server
myhostname = mail.example.net
mydomain = example.net
myorigin = $mydomain
mydestination = localhost
mynetworks = 192.168.1.0/24 192.168.2.0/24
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
compatibility_level=2

# Client
relayhost = x.x.x.x
relay_domains = example.net

# Restrictions
smtpd_sasl_auth_enable=yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd

# Tuning
default_process_limit = 100
smtpd_client_connection_count_limit = 600
in_flow_delay = 0s
initial_destination_concurrency = 400
default_destination_concurrency_limit = 600
smtp_destination_concurrency_limit = 600