2024-05-29 20:55:07 -07:00
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#!/opt/mailman/venv/bin/su python3
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2024-05-29 20:46:44 -07:00
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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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try:
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import os
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import sys
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import smtplib
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lmtp_host = sys.argv[3] if len(sys.argv) > 3 else 'localhost'
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lmtp = smtplib.LMTP(lmtp_host, int(sys.argv[1]))
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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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exit(100)
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