prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Using external smtp relay server for outgoing emails
  Hi,
  
  I need to use mailchannels.com to relay all outgoing emails from my Mailu install. In this doc is what I need to change in Postfix:
  
  https://mailchannels.zendesk.com/hc/en-us/articles/200262640-Setting-up-for-Postfix
  
  Is there any way to do this in Mailu ?
  
  Thanks,
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `core/postfix/start.py`
  Content:
  ```
  1 #!/usr/bin/python3
  2 
  3 import os
  4 import glob
  5 import shutil
  6 import multiprocessing
  7 import logging as log
  8 import sys
  9 from mailustart import resolve, convert
  10 
  11 from podop import run_server
  12 
  13 log.basicConfig(stream=sys.stderr, level=os.environ.get("LOG_LEVEL", "WARNING"))
  14 
  15 def start_podop():
  16     os.setuid(100)
  17     url = "http://" + os.environ["ADMIN_ADDRESS"] + "/internal/postfix/"
  18     # TODO: Remove verbosity setting from Podop?
  19     run_server(0, "postfix", "/tmp/podop.socket", [
  20 		("transport", "url", url + "transport/§"),
  21 		("alias", "url", url + "alias/§"),
  22 		("domain", "url", url + "domain/§"),
  23         ("mailbox", "url", url + "mailbox/§"),
  24         ("senderaccess", "url", url + "sender/access/§"),
  25         ("senderlogin", "url", url + "sender/login/§")
  26     ])
  27 
  28 # Actual startup script
  29 os.environ["FRONT_ADDRESS"] = resolve(os.environ.get("FRONT_ADDRESS", "front"))
  30 os.environ["ADMIN_ADDRESS"] = resolve(os.environ.get("ADMIN_ADDRESS", "admin"))
  31 os.environ["HOST_ANTISPAM"] = resolve(os.environ.get("HOST_ANTISPAM", "antispam:11332"))
  32 os.environ["HOST_LMTP"] = resolve(os.environ.get("HOST_LMTP", "imap:2525"))
  33 
  34 for postfix_file in glob.glob("/conf/*.cf"):
  35     convert(postfix_file, os.path.join("/etc/postfix", os.path.basename(postfix_file)))
  36 
  37 if os.path.exists("/overrides/postfix.cf"):
  38     for line in open("/overrides/postfix.cf").read().strip().split("\n"):
  39         os.system('postconf -e "{}"'.format(line))
  40 
  41 if os.path.exists("/overrides/postfix.master"):
  42     for line in open("/overrides/postfix.master").read().strip().split("\n"):
  43         os.system('postconf -Me "{}"'.format(line))
  44 
  45 for map_file in glob.glob("/overrides/*.map"):
  46     destination = os.path.join("/etc/postfix", os.path.basename(map_file))
  47     shutil.copyfile(map_file, destination)
  48     os.system("postmap {}".format(destination))
  49     os.remove(destination)
  50 
  51 convert("/conf/rsyslog.conf", "/etc/rsyslog.conf")
  52 
  53 # Run Podop and Postfix
  54 multiprocessing.Process(target=start_podop).start()
  55 if os.path.exists("/var/run/rsyslogd.pid"):
  56     os.remove("/var/run/rsyslogd.pid")
  57 os.system("/usr/lib/postfix/post-install meta_directory=/etc/postfix create-missing")
  58 os.system("/usr/lib/postfix/master &")
  59 os.execv("/usr/sbin/rsyslogd", ["rsyslogd", "-n"])
  60
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/core/postfix/start.py b/core/postfix/start.py
  --- a/core/postfix/start.py
  +++ b/core/postfix/start.py
  @@ -48,6 +48,11 @@
       os.system("postmap {}".format(destination))
       os.remove(destination)
   
  +if "RELAYUSER" in os.environ:
  +    path = "/etc/postfix/sasl_passwd"
  +    convert("/conf/sasl_passwd", path)
  +    os.system("postmap {}".format(path))
  +
   convert("/conf/rsyslog.conf", "/etc/rsyslog.conf")
   
   # Run Podop and Postfix
  
verification_info: {"golden_diff": "diff --git a/core/postfix/start.py b/core/postfix/start.py\n--- a/core/postfix/start.py\n+++ b/core/postfix/start.py\n@@ -48,6 +48,11 @@\n     os.system(\"postmap {}\".format(destination))\n     os.remove(destination)\n \n+if \"RELAYUSER\" in os.environ:\n+    path = \"/etc/postfix/sasl_passwd\"\n+    convert(\"/conf/sasl_passwd\", path)\n+    os.system(\"postmap {}\".format(path))\n+\n convert(\"/conf/rsyslog.conf\", \"/etc/rsyslog.conf\")\n \n # Run Podop and Postfix\n", "issue": "Using external smtp relay server for outgoing emails\nHi,\r\n\r\nI need to use mailchannels.com to relay all outgoing emails from my Mailu install. In this doc is what I need to change in Postfix:\r\n\r\nhttps://mailchannels.zendesk.com/hc/en-us/articles/200262640-Setting-up-for-Postfix\r\n\r\nIs there any way to do this in Mailu ?\r\n\r\nThanks,\r\n\n", "before_files": [{"content": "#!/usr/bin/python3\n\nimport os\nimport glob\nimport shutil\nimport multiprocessing\nimport logging as log\nimport sys\nfrom mailustart import resolve, convert\n\nfrom podop import run_server\n\nlog.basicConfig(stream=sys.stderr, level=os.environ.get(\"LOG_LEVEL\", \"WARNING\"))\n\ndef start_podop():\n    os.setuid(100)\n    url = \"http://\" + os.environ[\"ADMIN_ADDRESS\"] + \"/internal/postfix/\"\n    # TODO: Remove verbosity setting from Podop?\n    run_server(0, \"postfix\", \"/tmp/podop.socket\", [\n\t\t(\"transport\", \"url\", url + \"transport/\u00a7\"),\n\t\t(\"alias\", \"url\", url + \"alias/\u00a7\"),\n\t\t(\"domain\", \"url\", url + \"domain/\u00a7\"),\n        (\"mailbox\", \"url\", url + \"mailbox/\u00a7\"),\n        (\"senderaccess\", \"url\", url + \"sender/access/\u00a7\"),\n        (\"senderlogin\", \"url\", url + \"sender/login/\u00a7\")\n    ])\n\n# Actual startup script\nos.environ[\"FRONT_ADDRESS\"] = resolve(os.environ.get(\"FRONT_ADDRESS\", \"front\"))\nos.environ[\"ADMIN_ADDRESS\"] = resolve(os.environ.get(\"ADMIN_ADDRESS\", \"admin\"))\nos.environ[\"HOST_ANTISPAM\"] = resolve(os.environ.get(\"HOST_ANTISPAM\", \"antispam:11332\"))\nos.environ[\"HOST_LMTP\"] = resolve(os.environ.get(\"HOST_LMTP\", \"imap:2525\"))\n\nfor postfix_file in glob.glob(\"/conf/*.cf\"):\n    convert(postfix_file, os.path.join(\"/etc/postfix\", os.path.basename(postfix_file)))\n\nif os.path.exists(\"/overrides/postfix.cf\"):\n    for line in open(\"/overrides/postfix.cf\").read().strip().split(\"\\n\"):\n        os.system('postconf -e \"{}\"'.format(line))\n\nif os.path.exists(\"/overrides/postfix.master\"):\n    for line in open(\"/overrides/postfix.master\").read().strip().split(\"\\n\"):\n        os.system('postconf -Me \"{}\"'.format(line))\n\nfor map_file in glob.glob(\"/overrides/*.map\"):\n    destination = os.path.join(\"/etc/postfix\", os.path.basename(map_file))\n    shutil.copyfile(map_file, destination)\n    os.system(\"postmap {}\".format(destination))\n    os.remove(destination)\n\nconvert(\"/conf/rsyslog.conf\", \"/etc/rsyslog.conf\")\n\n# Run Podop and Postfix\nmultiprocessing.Process(target=start_podop).start()\nif os.path.exists(\"/var/run/rsyslogd.pid\"):\n    os.remove(\"/var/run/rsyslogd.pid\")\nos.system(\"/usr/lib/postfix/post-install meta_directory=/etc/postfix create-missing\")\nos.system(\"/usr/lib/postfix/master &\")\nos.execv(\"/usr/sbin/rsyslogd\", [\"rsyslogd\", \"-n\"])\n", "path": "core/postfix/start.py"}], "after_files": [{"content": "#!/usr/bin/python3\n\nimport os\nimport glob\nimport shutil\nimport multiprocessing\nimport logging as log\nimport sys\nfrom mailustart import resolve, convert\n\nfrom podop import run_server\n\nlog.basicConfig(stream=sys.stderr, level=os.environ.get(\"LOG_LEVEL\", \"WARNING\"))\n\ndef start_podop():\n    os.setuid(100)\n    url = \"http://\" + os.environ[\"ADMIN_ADDRESS\"] + \"/internal/postfix/\"\n    # TODO: Remove verbosity setting from Podop?\n    run_server(0, \"postfix\", \"/tmp/podop.socket\", [\n\t\t(\"transport\", \"url\", url + \"transport/\u00a7\"),\n\t\t(\"alias\", \"url\", url + \"alias/\u00a7\"),\n\t\t(\"domain\", \"url\", url + \"domain/\u00a7\"),\n        (\"mailbox\", \"url\", url + \"mailbox/\u00a7\"),\n        (\"senderaccess\", \"url\", url + \"sender/access/\u00a7\"),\n        (\"senderlogin\", \"url\", url + \"sender/login/\u00a7\")\n    ])\n\n# Actual startup script\nos.environ[\"FRONT_ADDRESS\"] = resolve(os.environ.get(\"FRONT_ADDRESS\", \"front\"))\nos.environ[\"ADMIN_ADDRESS\"] = resolve(os.environ.get(\"ADMIN_ADDRESS\", \"admin\"))\nos.environ[\"HOST_ANTISPAM\"] = resolve(os.environ.get(\"HOST_ANTISPAM\", \"antispam:11332\"))\nos.environ[\"HOST_LMTP\"] = resolve(os.environ.get(\"HOST_LMTP\", \"imap:2525\"))\n\nfor postfix_file in glob.glob(\"/conf/*.cf\"):\n    convert(postfix_file, os.path.join(\"/etc/postfix\", os.path.basename(postfix_file)))\n\nif os.path.exists(\"/overrides/postfix.cf\"):\n    for line in open(\"/overrides/postfix.cf\").read().strip().split(\"\\n\"):\n        os.system('postconf -e \"{}\"'.format(line))\n\nif os.path.exists(\"/overrides/postfix.master\"):\n    for line in open(\"/overrides/postfix.master\").read().strip().split(\"\\n\"):\n        os.system('postconf -Me \"{}\"'.format(line))\n\nfor map_file in glob.glob(\"/overrides/*.map\"):\n    destination = os.path.join(\"/etc/postfix\", os.path.basename(map_file))\n    shutil.copyfile(map_file, destination)\n    os.system(\"postmap {}\".format(destination))\n    os.remove(destination)\n\nif \"RELAYUSER\" in os.environ:\n    path = \"/etc/postfix/sasl_passwd\"\n    convert(\"/conf/sasl_passwd\", path)\n    os.system(\"postmap {}\".format(path))\n\nconvert(\"/conf/rsyslog.conf\", \"/etc/rsyslog.conf\")\n\n# Run Podop and Postfix\nmultiprocessing.Process(target=start_podop).start()\nif os.path.exists(\"/var/run/rsyslogd.pid\"):\n    os.remove(\"/var/run/rsyslogd.pid\")\nos.system(\"/usr/lib/postfix/post-install meta_directory=/etc/postfix create-missing\")\nos.system(\"/usr/lib/postfix/master &\")\nos.execv(\"/usr/sbin/rsyslogd\", [\"rsyslogd\", \"-n\"])\n", "path": "core/postfix/start.py"}]}