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path: root/roles/webmail/templates/etc/stunnel/postfix.conf.j2
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; **************************************************************************
; * Global options                                                         *
; **************************************************************************

; setuid()/setgid() to the specified user/group in daemon mode
setuid = stunnel4
setgid = stunnel4

; PID is created inside the chroot jail
pid = /var/run/stunnel4/postfix.pid

; Only log messages at severity warning (4) and higher
debug = 4

; **************************************************************************
; * Service defaults may also be specified in individual service sections  *
; **************************************************************************

; Certificate/key is needed in server mode and optional in client mode
cert = /etc/postfix/ssl/{{ ansible_fqdn }}.pem
key  = /etc/postfix/ssl/{{ ansible_fqdn }}.key
client = yes
socket = a:SO_BINDTODEVICE=lo

; Some performance tunings
socket = l:TCP_NODELAY=1
socket = r:TCP_NODELAY=1

; Prevent MITM attacks
verify = 4

; Disable support for insecure protocols
options = NO_SSLv2
options = NO_SSLv3
options = NO_TLSv1
options = NO_TLSv1.1

; These options provide additional security at some performance degradation
options = SINGLE_ECDH_USE
options = SINGLE_DH_USE

; Select permitted SSL ciphers
ciphers = EECDH+AES:EDH+AES:!MEDIUM:!LOW:!EXP:!aNULL:!eNULL:!SSLv2:!SSLv3:!TLSv1:!TLSv1.1

; **************************************************************************
; * Service definitions (remove all services for inetd mode)               *
; **************************************************************************

[smtp]
accept   = localhost:2525
connect  = outgoing.fripost.org:{{ postfix_instance.out.port }}
CAfile   = /etc/stunnel/certs/postfix.pem
protocol = smtp

; vim:ft=dosini