Source: logcheck Version: 1.3.17 Severity: normal logcheck invokes mime-construct with the --encoding 7bit argument. However, the data may contain UTF-8 or arbitrary octets depending on the logs in question. If a mail server refuses 8-bit data without 8BITMIME (a common anti-spam technique), the logcheck mails may be refused.
Either the --encoding argument should be left off, as recommended by the mime-construct manual page, or it should be specified as quoted-printable. Specifying 8bit could cause mail rejection if the lines exceed 998 octets, and base64 encoding of text/plain is frequently seen as a sign of spam. The change to use 7bit seems to have come in in 1.3.7, but the commit message does not specify a rationale for this change. -- System Information: Debian Release: stretch/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'testing'), (1, 'experimental-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) -- brian m. carlson / brian with sandals: Houston, Texas, US +1 832 623 2791 | https://www.crustytoothpaste.net/~bmc | My opinion only OpenPGP: https://keybase.io/bk2204
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