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authorGuilhem Moulin <guilhem@fripost.org>2017-05-31 21:42:32 +0200
committerGuilhem Moulin <guilhem@fripost.org>2017-06-01 01:09:00 +0200
commit6e39bad3fbe75b88fca4c2e2aad8eb51af14b1be (patch)
tree87898c1653a36f1b23efbef55d6f876d8bc83444 /roles/common/templates/etc/postfix
parente136d3edbdb6749d4559939dc9fcbc11d166e34c (diff)
Don't let authenticated client use arbitrary sender addresses.
The following policy is now implemented: * users can use their SASL login name as sender address; * alias and/or list owners can use the address as envelope sender; * domain postmasters can use arbitrary sender addresses under their domains; * domain owners can use arbitrary sender addresses under their domains, unless it is also an existing account name; * for known domains without owner or postmasters, other sender addresses are not allowed; and * arbitrary sender addresses under unknown domains are allowed.
Diffstat (limited to 'roles/common/templates/etc/postfix')
-rw-r--r--roles/common/templates/etc/postfix/master.cf.j27
1 files changed, 6 insertions, 1 deletions
diff --git a/roles/common/templates/etc/postfix/master.cf.j2 b/roles/common/templates/etc/postfix/master.cf.j2
index c2ee395..52b2ec4 100644
--- a/roles/common/templates/etc/postfix/master.cf.j2
+++ b/roles/common/templates/etc/postfix/master.cf.j2
@@ -20,8 +20,13 @@ tlsproxy unix - - n - 0 tlsproxy
dnsblog unix - - n - 0 dnsblog
cleanup_nochroot unix n - n - 0 cleanup
{% elif inst == 'MSA' %}
-{{ postfix_instance.MSA.port }} inet n - - - - smtpd
+submission inet n - - - - smtpd
-o tls_high_cipherlist=EECDH+AESGCM:!MEDIUM:!LOW:!EXP:!aNULL:!eNULL
+{% if groups.webmail | difference([inventory_hostname]) | length > 0 %}
+[{{ postfix_instance.MSA.addr }}]:{{ postfix_instance.MSA.port }} inet n - - - - smtpd
+ -o smtpd_tls_security_level=none
+ -o smtpd_sasl_security_options=noanonymous
+{% endif %}
{% elif inst in ['IMAP', 'out', 'lists'] %}
[{{ postfix_instance[inst].addr }}]:{{ postfix_instance[inst].port }} inet n - - - - smtpd
{% endif %}