python - 在使用 Python smtplib 时检查电子邮件日志

Question

我编写了一个使用 smtplib 发送电子邮件的简单程序。该程序完美运行并发送电子邮件。有没有什么选项可以让我在通信期间查看所有日志？意思是可以打印或查看发生的 smtp 对话吗？

Answer 1

首先，您应该检查文档smtplib- 请参阅set_debuglevel

with smtplib.SMTP_SSL(f'{host}:{port}') as server:

    server.set_debuglevel(1)

    server.login(login, password)
    server.sendmail(sender_email, recipients, message.as_string())

---

因为.set_debuglevel(1)它显示

send: 'ehlo [127.0.1.1]\r\n'
reply: b'250-smtp.googlemail.com at your service, [79.163.228.253]\r\n'
reply: b'250-SIZE 35882577\r\n'
reply: b'250-8BITMIME\r\n'
reply: b'250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\r\n'
reply: b'250-ENHANCEDSTATUSCODES\r\n'
reply: b'250-PIPELINING\r\n'
reply: b'250-CHUNKING\r\n'
reply: b'250 SMTPUTF8\r\n'
reply: retcode (250); Msg: b'smtp.googlemail.com at your service, [79.163.228.253]\nSIZE 35882577\n8BITMIME\nAUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\nENHANCEDSTATUSCODES\nPIPELINING\nCHUNKING\nSMTPUTF8'
send: 'AUTH PLAIN ********\r\n'
reply: b'235 2.7.0 Accepted\r\n'
reply: retcode (235); Msg: b'2.7.0 Accepted'

因为.set_debuglevel(2)它添加了时间戳

21:26:26.602350 send: 'ehlo [127.0.1.1]\r\n'
21:26:26.632756 reply: b'250-smtp.googlemail.com at your service, [79.163.228.253]\r\n'
21:26:26.632871 reply: b'250-SIZE 35882577\r\n'
21:26:26.632917 reply: b'250-8BITMIME\r\n'
21:26:26.632957 reply: b'250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\r\n'
21:26:26.633022 reply: b'250-ENHANCEDSTATUSCODES\r\n'
21:26:26.633072 reply: b'250-PIPELINING\r\n'
21:26:26.633112 reply: b'250-CHUNKING\r\n'
21:26:26.633151 reply: b'250 SMTPUTF8\r\n'
21:26:26.633201 reply: retcode (250); Msg: b'smtp.googlemail.com at your service, [79.163.228.253]\nSIZE 35882577\n8BITMIME\nAUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH\nENHANCEDSTATUSCODES\nPIPELINING\nCHUNKING\nSMTPUTF8'

---

它会发送它，standard error因此如果您想将其放入文件中，'output.txt'则必须重定向sys.stderr

import sys

old_stderr = sys.stderr

sys.stderr = open('output.txt', 'w')

with smtplib.SMTP_SSL(f'{host}:{port}') as server:

    server.set_debuglevel(1)

    server.login(login, password)
    server.sendmail(sender_email, recipients, message.as_string())

sys.stderr = old_stderr