Fix the catch-all resolution again.

We introduce a limitation on the domain-aliases: they can't have
children (e.g., lists or users) any longer.

The whole alias resolution, including catch-alls and domain aliases, is
now done in 'virtual_alias_maps'. We stop the resolution by returning a
dummy alias A -> A for mailboxes, before trying the catch-all maps.

We're still using transport_maps for lists. If it turns out to be a
bottleneck due to the high-latency coming from LDAP maps, (and the fact
that there is a single qmgr(8) daemon), we could rewrite lists to a
dummy subdomain and use a static transport_maps instead:

  virtual_alias_maps:
    mylist@example.org -> mylist#example.org@mlmmj.localhost.localdomain

  transport_maps:
    mlmmj.localhost.localdomain mlmmj:

10 files changed, 37 insertions, 29 deletions

diff --git a/roles/MX/templates/etc/postfix/main.cf.j2 b/roles/MX/templates/etc/postfix/main.cf.j2
index 9f88eef..6c2004a 100644
--- a/roles/MX/templates/etc/postfix/main.cf.j2
+++ b/roles/MX/templates/etc/postfix/main.cf.j2
@@ -19,7 +19,7 @@ append_dot_mydomain = no
 
 # Turn off all TCP/IP listener ports except that necessary for the mail
 # exchange.
-master_service_disable = !smtp.inet !127.0.0.1:2599.inet inet
+master_service_disable = !smtp.inet inet
 
 queue_directory       = /var/spool/postfix-{{ postfix_instance[inst].name }}
 data_directory        = /var/lib/postfix-{{ postfix_instance[inst].name }}
@@ -56,19 +56,20 @@ virtual_transport = smtpl:[127.0.0.1]:{{ LDA.port }}
 {% else %}
 virtual_transport = smtps:[{{ LDA.host }}]:{{ LDA.port }}
 {% endif %}
-# It's a bit stupid to include part of the virtual_mailbox_maps here,
-# but we need to tell postfix to accept the recipient
-# (virtual_mailbox_maps) *before* sending away to the right machine
-# (transport_maps)
-transport_maps = pcre:$config_directory/virtual/transport_reserved_maps.pcre
-                 ldap:$config_directory/virtual/transport_mailbox_maps.cf
-                 ldap:$config_directory/virtual/transport_lists_maps.cf
-                 ldap:$config_directory/virtual/transport_catchall_maps.cf
 
 virtual_mailbox_domains = ldap:$config_directory/virtual/mailbox_domains.cf
-virtual_alias_maps      = cdb:$config_directory/virtual/reserved_alias_maps
-                          ldap:$config_directory/virtual/alias_maps.cf
-virtual_mailbox_maps    = $transport_maps
+virtual_alias_maps      = pcre:$config_directory/virtual/reserved_alias.pcre
+                          ldap:$config_directory/virtual/alias.cf
+                          # stop the alias resolution (by making finding
+                          # an A -> A alias) before searching for
+                          # catch-alls and domain aliases
+                          $virtual_mailbox_maps
+                          ldap:$config_directory/virtual/alias_domains.cf
+                          ldap:$config_directory/virtual/catchall.cf
+virtual_mailbox_maps    = ldap:$config_directory/virtual/mailbox.cf
+                          ldap:$config_directory/virtual/list.cf
+transport_maps          = cdb:$config_directory/virtual/transport_reserved_alias
+                          ldap:$config_directory/virtual/transport_list.cf
 
 # Don't rewrite remote headers
 local_header_rewrite_clients     =
diff --git a/roles/MX/templates/etc/postfix/virtual/alias_maps.cf.j2 b/roles/MX/templates/etc/postfix/virtual/alias.cf.j2
index 8e3a778..c7d2f0a 100644
--- a/roles/MX/templates/etc/postfix/virtual/alias_maps.cf.j2
+++ b/roles/MX/templates/etc/postfix/virtual/alias.cf.j2
@@ -1,6 +1,8 @@
 server_host      = ldapi://%2Fprivate%2Fldapi/
 version          = 3
 search_base      = fvl=%u,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
 scope            = base
+bind             = none
 query_filter     = (&(objectClass=FripostVirtualAlias)(fvl=%u))
 result_attribute = fripostMaildrop
diff --git a/roles/MX/templates/etc/postfix/virtual/transport_catchall_maps.cf.j2 b/roles/MX/templates/etc/postfix/virtual/alias_domains.cf.j2
index cc189cf..dec8bce 100644
--- a/roles/MX/templates/etc/postfix/virtual/transport_catchall_maps.cf.j2
+++ b/roles/MX/templates/etc/postfix/virtual/alias_domains.cf.j2
@@ -1,8 +1,9 @@
 server_host      = ldapi://%2Fprivate%2Fldapi/
 version          = 3
 search_base      = fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
 scope            = base
 bind             = none
-query_filter     = (&(objectClass=FripostVirtualDomain)(fvd=%d)(fripostOptionalMaildrop=*))
-result_attribute = fvd
-result_format    = smtpl:[127.0.0.1]:2599
+query_filter     = (&(objectClass=FripostVirtualAliasDomain)(fvd=%d))
+result_attribute = fripostMaildrop
+result_format    = %U@%s
diff --git a/roles/MX/templates/etc/postfix/virtual/catchall_maps.cf.j2 b/roles/MX/templates/etc/postfix/virtual/catchall.cf.j2
index f8324f6..8ac40fd 100644
--- a/roles/MX/templates/etc/postfix/virtual/catchall_maps.cf.j2
+++ b/roles/MX/templates/etc/postfix/virtual/catchall.cf.j2
@@ -1,7 +1,8 @@
 server_host      = ldapi://%2Fprivate%2Fldapi/
 version          = 3
 search_base      = fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
 scope            = base
 bind             = none
-query_filter     = (&(objectClass=FripostVirtualDomain)(fvd=%d)(fripostOptionalMaildrop=*))
+query_filter     = (&(objectClass=FripostVirtualDomain)(!(objectClass=FripostVirtualAliasDomain))(fvd=%d)(fripostOptionalMaildrop=*))
 result_attribute = fripostOptionalMaildrop
diff --git a/roles/MX/templates/etc/postfix/virtual/list.cf.j2 b/roles/MX/templates/etc/postfix/virtual/list.cf.j2
new file mode 100644
index 0000000..8bcd5df
--- /dev/null
+++ b/roles/MX/templates/etc/postfix/virtual/list.cf.j2
@@ -0,0 +1,9 @@
+server_host      = ldapi://%2Fprivate%2Fldapi/
+version          = 3
+search_base      = fvl=%u,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
+scope            = base
+bind             = none
+query_filter     = (&(objectClass=FripostVirtualList)(fvl=%u))
+result_attribute = fvl
+result_format    = %S
diff --git a/roles/MX/templates/etc/postfix/virtual/transport_mailbox_maps.cf.j2 b/roles/MX/templates/etc/postfix/virtual/mailbox.cf.j2
index 3e003db..b421e9a 100644
--- a/roles/MX/templates/etc/postfix/virtual/transport_mailbox_maps.cf.j2
+++ b/roles/MX/templates/etc/postfix/virtual/mailbox.cf.j2
@@ -1,12 +1,9 @@
 server_host      = ldapi://%2Fprivate%2Fldapi/
 version          = 3
 search_base      = fvl=%u,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
 scope            = base
 bind             = none
 query_filter     = (&(objectClass=FripostVirtualUser)(fvl=%u))
 result_attribute = fvl
-{% if 'LDA' in group_names %}
-result_format    = smtpl:[127.0.0.1]:{{ LDA.port }}
-{% else %}
-result_format    = smtps:[{{ LDA.host }}]:{{ LDA.port }}
-{% endif %}
+result_format    = %S
diff --git a/roles/MX/templates/etc/postfix/virtual/transport_reserved_maps.pcre.j2 b/roles/MX/templates/etc/postfix/virtual/reserved_alias.pcre.j2
index e240e91..6f62a01 100644
--- a/roles/MX/templates/etc/postfix/virtual/transport_reserved_maps.pcre.j2
+++ b/roles/MX/templates/etc/postfix/virtual/reserved_alias.pcre.j2
@@ -1,6 +1,5 @@
-if !/@fripost\.org$/
+/^(?:postmaster|abuse)(?:\+.*)?@fripost\.org$/ admin@fripost.org
 # For other domains, RFC 822 section 6.3 and RFC 2142 section 4
 # mandatory aliases are forwarded to OUR admin team and to the domain
 # owner or postmaster, if there are any.
-/^(?:postmaster|abuse)(?:\+.*)?@/   reserved-alias:
-endif
+/^((?:postmaster|abuse)(?:\+.*)?@.*)/   $1@reserved.locahost.localdomain
diff --git a/roles/MX/templates/etc/postfix/virtual/reserved_alias_maps.j2 b/roles/MX/templates/etc/postfix/virtual/reserved_alias_maps.j2
deleted file mode 100644
index fe04715..0000000
--- a/roles/MX/templates/etc/postfix/virtual/reserved_alias_maps.j2
+++ /dev/null
@@ -1,4 +0,0 @@
-# RFC 822 section 6.3 and RFC 2142 section 4 mandatory aliases are
-# forwarded to the admin team.
-postmaster@fripost.org  admin@fripost.org
-abuse@fripost.org       admin@fripost.org
diff --git a/roles/MX/templates/etc/postfix/virtual/transport_lists_maps.cf.j2 b/roles/MX/templates/etc/postfix/virtual/transport_list.cf.j2
index 6a0965f..eb696db 100644
--- a/roles/MX/templates/etc/postfix/virtual/transport_lists_maps.cf.j2
+++ b/roles/MX/templates/etc/postfix/virtual/transport_list.cf.j2
@@ -1,9 +1,10 @@
 server_host      = ldapi://%2Fprivate%2Fldapi/
 version          = 3
 search_base      = fvl=%u,fvd=%d,ou=virtual,o=mailHosting,dc=fripost,dc=org
+domain           = static:all
 scope            = base
 bind             = none
-query_filter     = (&(|(objectClass=FripostVirtualList)(objectClass=FripostVirtualListCommand))(fvl=%u))
+query_filter     = (&(objectClass=FripostVirtualList)(fvl=%u))
 result_attribute = fvl
 {% if 'lists' in group_names %}
 result_format    = smtpl:[127.0.0.1]:{{ lists.port }}
diff --git a/roles/MX/templates/etc/postfix/virtual/transport_reserved_alias.j2 b/roles/MX/templates/etc/postfix/virtual/transport_reserved_alias.j2
new file mode 100644
index 0000000..4af5318
--- /dev/null
+++ b/roles/MX/templates/etc/postfix/virtual/transport_reserved_alias.j2
@@ -0,0 +1 @@
+reserved.locahost.localdomain   reserved-alias: