48 lines
1.4 KiB
Bash
Executable file
48 lines
1.4 KiB
Bash
Executable file
#!/bin/bash
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# Default configuration.
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EMAIL_TO=('sysadmin@slackware.uk')
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EMAIL_FROM="\"Server: ${HOSTNAME%%.*}\" <noreply@slackware.uk>"
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# Allow /etc/default/warn-smtp-queue to override default configuration.
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[[ -e /etc/default/warn-smtp-queue ]] && {
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# shellcheck disable=SC1091
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source /etc/default/warn-smtp-queue || {
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printf "%s: %s\\n" "${0##*/}" "failed reading /etc/default/warn-smtp-queue" >&2
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exit 1
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}
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}
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# Don't do anything unless 'mailq' is installed.
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hash mailq 2>/dev/null && {
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# Prevent a race with other cron jobs that produce emails.
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sleep $(( 10 + (RANDOM % 30) ))
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# Get the queue
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TMP_OUTPUT="$(mailq)"
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[[ -z "$TMP_OUTPUT" ]] && exit 0
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# Send the message.
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if [[ -n "${EMAIL_TO[*]}" ]]; then
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if hash mailx >/dev/null 2>&1; then
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mailx -S "from=$EMAIL_FROM" -s "Mail queue" "${EMAIL_TO[@]}" <<<"$TMP_OUTPUT" 2>/dev/null || {
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printf "%s: %s\\n" "${0##*/}" "mailx command failed" >&2
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exit 1
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}
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elif hash mail >/dev/null 2>&1; then
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mail -r "$EMAIL_FROM" -s "Mail queue" "${EMAIL_TO[@]}" <<<"$TMP_OUTPUT" 2>/dev/null || {
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printf "%s: %s\\n" "${0##*/}" "mail command failed" >&2
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exit 1
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}
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else
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printf "%s: %s\\n" "${0##*/}" "no mailer command found" >&2
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exit 1
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fi
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else
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printf "%s: %s\\n" "${0##*/}" "no recipient configured for mail delivery" >&2
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exit 1
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fi
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}
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exit 0
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