我在 CentOS 上安装了 sendmail，但没有配置它并将其作为守护进程启动。我可以使用 sendmail 命令发送电子邮件吗？ sendmail [电子邮件受保护] < ./myemailcontent I have no luck with this command. It seems to connect to 127.0.0.1 then times out. I think sendmail will connect to the remote smtp server(remotedomain.com) to deliver the email but it seems to use local smtp server to relay the email. How can I use sendmail to send an email?
sendmailmail如果您想发送简单的电子邮件并且更喜欢便携性，请查看下面的脚本：
#!/bin/sh
# sendmail or "sendmail look alike" provided by postfix/exim/...
SENDMAIL=/usr/sbin/sendmail
## Or use custom "sendmail look alike"
## e.g. msmtp which can send without local SMTP server
#SENDMAIL=/usr/bin/msmtp
[email protected]
$SENDMAIL -i -- $TO <<END_OF_EMAIL
Subject: My test message subject
To: $TO
X-Comment: Use empty line to separate email headers from email body
My test message body
END_OF_EMAIL
要使用sendmail，您首先需要安装postfix：
>> sudo apt-get install postfix您必须通过运行
>> dpkg-reconfigure postfix>> service postfix reload注意：
/usr/sbin/sendmailsendmailwhich sendmail使用
sendmail示例：
>> sendmail [email protected]
Subject: Subject Line
... Email Body Here ...
然后在新行按
CTRL+D如果您发现电子邮件速度缓慢或无法正常工作，此链接对如何操作有很好的说明：https://www.digitalocean.com/community/questions/sendmail-is-slow-to-send-mail
如果您想使用 sendmail 添加
文件附件，我建议使用
uuencode>> sudo apt install sharutils
uuencode示例：
uuencode /path/to/file.txt /path/to/file.txt | sendmail "[email protected]"请记住，您必须将
/path/to/file.txtsendmail命令不是那么直观，也许你可以通过这个函数来使用它：
send_email() {
local recipient_email="$1"
local subject="$2"
local body="$3"
if [ -z "$recipient_email" ] || [ -z "$subject" ] || [ -z "$body" ]; then
echo "Usage: send_email <recipient_email> <subject> <body>"
return 1
fi
echo -e "Subject: $subject\n\n$body" | sendmail "$recipient_email"
}