71 lines
2.6 KiB
Python
71 lines
2.6 KiB
Python
#!/opt/mailman/venv/bin/python3
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#
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# Written by Thomas Schneider <qsuscs@qsuscs.de>
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# This script is placed in public domain. If this is not applicable, consider
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# it licensed under the CC-0:
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# <https://creativecommons.org/publicdomain/zero/1.0/>
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# Command Line Arguments (reverse engineered)
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# $1 LMTP Port
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# $2 ????
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# $3 LMTP Host
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# std_in message text
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import logging
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logger = logging.getLogger(__name__)
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# Format time and message
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FORMAT = '%(asctime)s %(message)s'
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# Set Date Format
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DATEFMT = '%Y-%m-%d %H:%M:%S %Z'
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LEVEL=logging.INFO
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LOGFILE='/opt/mailman/logs/courier-to-mailman.log'
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logging.basicConfig(filename=LOGFILE, level=LEVEL, format=FORMAT, datefmt=DATEFMT)
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try:
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import os
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import sys
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import smtplib
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logger.info('Starting Logging (inside try)')
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# Setup LTMP connection
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lmtp_host = sys.argv[3] if len(sys.argv) > 3 else 'localhost'
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lmtp_port = sys.argv[1] if len(sys.argv) > 1 else 8024
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logger.info('lmtp_host: %s lmtp_port: %s', lmtp_host, lmtp_port)
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# class smtplib.LMTP(host='', port=LMTP_PORT, local_hostname=None, source_address=None)
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logger.info('lmtp_port: %s', lmtp_port)
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lmtp = smtplib.LMTP(lmtp_host, int(lmtp_port))
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logger.info('lmtp_port (lmtp setup): %s', lmpt_port)
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try:
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# Unfortunately qmail sends to local bare LF for end line, while
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# SMTP requires CRLF, so normalize to that. Error message without this:
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# "Line too long (see RFC5321 4.5.3.1.6)"
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# https://gitlab.com/mailman/mailman/-/issues/1133
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content = sys.stdin.buffer.read()
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content = content.replace(b'\r\n', b'\n').replace(b'\r', b'\n').replace(b'\n', b'\r\n')
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# See <https://qmail.notqmail.org/qmail-manual-html/man8/qmail-command.html>
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# for qmail command docs and supplied environment variables.
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# We need to replace "1" with an empty string, as qmail only supports EXT,
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# EXT2, EXT3, EXT4.
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arg_ext = sys.argv[2] if sys.argv[2] != "1" else ""
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lmtp.sendmail(
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os.environ['SENDER'],
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os.environ['EXT' + arg_ext] + "@" + os.environ['HOST'],
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#sys.stdin.buffer.read()
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content
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)
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except smtplib.SMTPResponseException as e:
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if 400 <= e.smtp_code < 500:
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exit(111)
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# otherwise, it's either a 5xx aka permanent error or something else
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# is already b0rked, thus raise -> exit(100) -> have qmail return a
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# 5xx error
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else:
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raise
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except:
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logger.error('lmtp error')
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#logger.error('lmtp failed errorno: %s, message: %s', e.errno, e.strerror)
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exit(100) |