Make the webmail connect directly to the outgoing SMTP proxy.

(Hence delete the 'webmail' Postfix instance.)  This shortens the delay
caused by the recipient verification probes.

1 files changed, 55 insertions, 0 deletions

diff --git a/roles/webmail/templates/etc/stunnel/postfix.conf.j2 b/roles/webmail/templates/etc/stunnel/postfix.conf.j2
new file mode 100644
index 0000000..78922c8
--- /dev/null
+++ b/roles/webmail/templates/etc/stunnel/postfix.conf.j2
@@ -0,0 +1,55 @@
+; **************************************************************************
+; * 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