# SMTP 请求方式
为开发者提供 SMTP 协议的投递方式, 以下是会话过程. 详细的代码示例, 请移步这里
S: 220 SendCloud Inbound Server ESMTP Haraka 2.2.4 ready
C: ehlo ifaxin.com
S: 250-SendCloud Inbound Server Hello, Haraka is at your service.
S: 250-PIPELINING
S: 250-8BITMIME
S: 250-SIZE 16000000
S: 250 AUTH LOGIN
C: AUTH LOGIN base64(api_user)
S: 334 UGFzc3dvcmQ6
C: base64(api_key)
S: 235 Authentication successful
C: mail FROM:<support@ifaxin.com>
S: 250 sender <support@ifaxin.com> OK
C: rcpt TO:<ben@ifaxin.com>
S: 250 recipient <ben@ifaxin.com> OK
C: data
S: 354 go ahead, make my day
C: ... ...
C: .
S: 250 #1426390015358_15_6484_8661.sc-10_10_127_51-inbound#Queued
C: quit
S: 221 SendCloud Inbound Server closing connection. Have a jolly good day
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注意 SMTP 调用返回 536 Frequency limited，意味着每个 apiuser 每分钟，api 和 smtp 总共调用不能超过 2 万次
# SMTP 方式接入使用标签功能
验证 API_USER 时将标签 ID ( label_id ) 拼接在后面即可, 拼接规则:
api_user + '#' + label_id
不使用标签接入:
S: 250-SendCloud Inbound Server Hello, Haraka is at your service.
S: 250-PIPELINING
S: 250-8BITMIME
S: 250-SIZE 16000000
S: 250-STARTTLS
S: 250 AUTH LOGIN
C: AUTH LOGIN base64(api_user)
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使用标签接入:
S: 250-SendCloud Inbound Server Hello, Haraka is at your service.
S: 250-PIPELINING
S: 250-8BITMIME
S: 250-SIZE 16000000
S: 250-STARTTLS
S: 250 AUTH LOGIN
C: AUTH LOGIN base64(api_user + '#' + label_id)
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python 代码片段:
# 不使用标签接入:
s = SMTP('%s:%d' % (HOST, PORT))
s.set_debuglevel(DEBUG_MODE)
if USE_SSL:
s.starttls()
s.login(API_USER, API_KEY)
# 使用标签接入:
s = SMTP('%s:%d' % (HOST, PORT))
s.set_debuglevel(DEBUG_MODE)
if USE_SSL:
s.starttls()
s.login(API_USER + '#' + label_id, API_KEY)
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# SMTP邮件发送内嵌图片
代码示例如下:
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage
import smtplib
class MyEmail:
def __init__(self):
self.smtp = smtplib.SMTP()
self.login_username = 'postmaster@testdomain.sendcloud.org'
self.login_password = '*****'
self.sender = 'postmaster@testdomain.sendcloud.org' # same as login_username
self.receiver = 'test123@qq.com'
self.host = 'smtp.sendcloud.net'
self.port = 25
def connect(self):
self.smtp.connect(self.host)
def login(self):
self.smtp.login(self.login_username, self.login_password)
def send(self):
msg = MIMEMultipart('related')
msg['From'] = self.sender
msg['To'] = self.receiver
email_title = 'python test inline image'
msg['Subject'] = email_title
content = MIMEText('test image content <img src="cid:image1" alt="xxxxx">', 'html', 'utf-8')
msg.attach(content)
fp = open('./test.png','rb')
img = MIMEImage(fp.read())
img.add_header('Content-ID','image1') #the value of content-id is the cid in html
msg.attach(img)
self.smtp.sendmail(self.sender, self.receiver, msg.as_string())
def quit(self):
self.smtp.quit()
def send():
myemail = MyEmail()
myemail.connect()
myemail.login()
myemail.send()
myemail.quit()
if __name__ == "__main__":
send()
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# SMTP协议请求发送邮件加密
POODLE漏洞表明SSL v3.0现在是完全不安全的，故用户通过SMTP接入加密协议支持Tls-v1.0-v1.2，不支持ssl3.0及之前版本. 端口25/2525/587 均支持STARTTLS加密，需要用户在代码添加一段加密代码，如java语言添加： props.setProperty("mail.smtp.starttls.enable", "true");