bash netcat send mail 筆記

#!/bin/bash

server="192.168.1.1 25"

s=中文標題
helo=localhost.local
mailfrom=u@b.local
mailto=u@a.local

s=$(echo -n ${s}|base64);

cat <<EOF |nc ${server}
HELO $helo
MAIL FROM:${mailfrom}
RCPT TO:${mailto}
DATA
Date: Thu, 28 Jan 2021 12:02:41 +0800
From: ${mailfrom}
To: ${mailto}
Subject:=?UTF-8?B?${s}?=

Content-Type: text/plain; charset=utf-8

中文輸入沒有問題

中文輸入沒有問題
.

QUIT
EOF

其它

SMTP  date 格式

Date: Thu, 28 Jan 2021 12:02:41 +0800  #$(date '+%a, %d %b %Y %H:%M:%S %z')
# date -R