Fixed #230 adding postifx configuration. Also added tests.

Makefile

@@ -62,6 +62,7 @@ fixtures:
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-alias-external.txt"
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-alias-local.txt"
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-user.txt"
+	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-user-and-cc-local-alias.txt"
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-regexp-alias-external.txt"
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-regexp-alias-local.txt"
 	docker exec mail /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/sieve-spam-folder.txt"

target/postfix/main.cf

@@ -49,6 +49,7 @@ smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject
 smtpd_sasl_auth_enable = yes
 smtpd_sasl_path = /var/spool/postfix/private/auth
 smtpd_sasl_type = dovecot
+dovecot_destination_recipient_limit = 1
 
 smtpd_sasl_security_options = noanonymous
 smtpd_sasl_local_domain = $myhostname

test/email-templates/existing-alias-local.txt

@@ -3,7 +3,7 @@ MAIL FROM: user@external.tld
 RCPT TO: alias2@localhost.localdomain
 DATA
 From: Docker Mail Server <dockermailserver@external.tld>
-To: Existing Local User <alias2@localhost.localdomain>
+To: Existing Local Alias <alias2@localhost.localdomain>
 Date: Sat, 22 May 2010 07:43:25 -0400
 Subject: Test Message
 This is a test mail.

test/email-templates/existing-user-and-cc-local-alias.txt

@@ -0,0 +1,13 @@
+HELO mail.external.tld
+MAIL FROM: user@external.tld
+RCPT TO: user1@localhost.localdomain
+DATA
+From: Docker Mail Server <dockermailserver@external.tld>
+To: Existing Local User <user1@localhost.localdomain>
+Cc: Existing Local Alias <alias2@localhost.localdomain>
+Date: Sat, 22 May 2010 07:43:25 -0400
+Subject: Test Message
+This is a test mail.
+
+.
+QUIT

test/tests.bats

@@ -131,7 +131,7 @@
 @test "checking smtp: delivers mail to existing account" {
   run docker exec mail /bin/sh -c "grep 'status=sent (delivered via dovecot service)' /var/log/mail/mail.log | wc -l"
   [ "$status" -eq 0 ]
-  [ "$output" -eq 4 ]
+  [ "$output" -eq 5 ]
 }
 
 @test "checking smtp: delivers mail to existing alias" {
@@ -149,7 +149,7 @@
 @test "checking smtp: user1 should have received 3 mails" {
   run docker exec mail /bin/sh -c "ls -A /var/mail/localhost.localdomain/user1/new | wc -l"
   [ "$status" -eq 0 ]
-  [ "$output" = 3 ]
+  [ "$output" = 4 ]
 }
 
 @test "checking smtp: rejects mail to unknown user" {
@@ -427,6 +427,8 @@
 @test "checking system: /var/log/mail/mail.log is error free" {
   run docker exec mail grep 'non-null host address bits in' /var/log/mail/mail.log
   [ "$status" -eq 1 ]
+  run docker exec mail grep 'mail system configuration error' /var/log/mail/mail.log
+  [ "$status" -eq 1 ]
   run docker exec mail grep ': error:' /var/log/mail/mail.log
   [ "$status" -eq 1 ]
   run docker exec mail_pop3 grep 'non-null host address bits in' /var/log/mail/mail.log