/etc/mail/aliases

toor:           root
daemon:         root
bin:            root
games:          root
postfix:        root
named:          root
ntpd:           root
sshd:           root
nobody:         root
root:           alex


/etc/postfix/main.cf

myhostname = spyro.lan.net
mydomain = lan.net
inet_interfaces = all
mydestination = spyro.lan.net, localhost.lan.net, lan.net
mynetworks = 192.168.0.0/24, 127.0.0.0/8
home_mailbox = .maildir/
local_destination_concurrency_limit = 2
default_destination_concurrency_limit = 10