5 files changed, 12 insertions(+), 1 deletions(-)

M postfix/README.md
M postfix/entrypoint.sh
M postfix/main.cf
M postfix/main.cf.tls-in
M postfix/main.cf.tls-out

@@ 21,7 21,7 @@ make image
 Can be used with any container manager toolchain.
 
 Create a `generic(5)` file in `$genericfile`.
-Mail with recipient addresses matching the patterns will be rewritten.
+Addresses matching the patterns will be rewritten.
 It must also be owned (on the host system) by the user that will create the
 container (i.e. `root` for conventional `docker(1)` deployments).
 It should like like:


@@ 31,6 31,12 @@ root@localhost example@gmail.com
 @localhost     example@gmail.com
 ```
 
+If instead an address should only be rewritten when it is a recipient address,
+create a `canonical(5)` file in `$canonicalfile`.
+It should look the same way.
+It must also be owned (on the host system) by the user that will create the
+container (i.e. `root` for conventional `docker(1)` deployments).
+
 Create a `transport(5)` file in `$transportfile`.
 Mail is routed based on which pattern the recipient address matches.
 It must also be owned (on the host system) by the user that will create the


@@ 70,6 76,7 @@ Try:
 ```
 $conman run --detach --name postfix --restart always \
   --mount type=bind,src=$genericfile,dst=/etc/postfix/generic,readonly \
+  --mount type=bind,src=$canonicalfile,dst=/etc/postfix/recipient_canonical,readonly \
   --mount type=bind,src=$transportfile,dst=/etc/postfix/transport,readonly \
   --mount type=bind,src=$saslfile,dst=/etc/postfix/sasl/sasl_passwd,readonly \
   --mount type=bind,src=$sasldb,dst=/etc/sasl2/sasldb2,readonly \

@@ 2,6 2,7 @@
 newaliases
 postmap /etc/postfix/transport
 postmap /etc/postfix/generic
+postmap /etc/postfix/recipient_canonical
 postmap /etc/postfix/sasl/sasl_passwd
 
 sed -i /etc/postfix/main.cf -e "s/^mydomain.*/mydomain = ${DOMAIN}/"

@@ 18,6 18,7 @@ smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
 
 # Address rewriting
 smtp_generic_maps = lmdb:/etc/postfix/generic
+recipient_canonical_maps = lmdb:/etc/postfix/recipient_canonical
 
 # Transport map
 transport_maps = lmdb:/etc/postfix/transport

@@ 18,6 18,7 @@ smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
 
 # Address rewriting
 smtp_generic_maps = lmdb:/etc/postfix/generic
+recipient_canonical_maps = lmdb:/etc/postfix/recipient_canonical
 
 # Transport map
 smtp_dns_support_level = disabled

@@ 18,6 18,7 @@ smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
 
 # Address rewriting
 smtp_generic_maps = lmdb:/etc/postfix/generic
+recipient_canonical_maps = lmdb:/etc/postfix/recipient_canonical
 
 # Transport map
 transport_maps = lmdb:/etc/postfix/transport