有人能帮我解释一下这些日志文件里发生了什么吗？我在那里添加了自己的评论，但由于我不是经验丰富的邮件管理员，所以我需要经验丰富的人来帮我 ;)
让我感到困惑的是，SPF 部分会导致邮件被拒绝，即使发送邮件的域名是一家非常非常知名的公司。是不是因为他们的域名上没有设置 SPF 标头？
如果是这样..我可以在我的服务器上使用哪些最安全的设置来允许合法电子邮件但阻止垃圾邮件？
我已经运行了域密钥、SPF 和 spamhaus 黑名单，但是 SPF 似乎导致了一些问题。
非常感谢你的帮助:)
Remote mailserver connects and begins negotiation
Oct 20 18:30:59 msvsc01-g09np postfix/smtpd[29264]: connect from unknown[192.208.34.37]
Oct 20 17:30:59 msvsc01-g09np postfix/smtpd[29264]: NOQUEUE: client=unknown[192.208.34.37]
Oct 20 17:30:59 msvsc01-g09np postfix/smtpd[29269]: BD5B9292AF1: client=unknown[192.208.34.37]
Oct 20 18:30:59 msvsc01-g09np before-queue[29266]: check handlers for addr: xxxxxxxxxxxxxxxx.com
Oct 20 18:30:59 msvsc01-g09np before-queue[29266]: check handlers for addr: yyyyyyyyyyyyyyyy.com
Oct 20 18:30:59 msvsc01-g09np before-queue[29266]: check handlers for addr: zzzzzzzzzzzzzzzz.com
Oct 20 18:30:59 msvsc01-g09np before-queue[29266]: Processing handlers...
Oct 20 18:30:59 msvsc01-g09np before-remote[29268]: check handlers for addr: xxxxxxxxxxxxxxxx.com
Oct 20 18:30:59 msvsc01-g09np before-remote[29268]: check handlers for addr: yyyyyyyyyyyyyyyy.com
Oct 20 18:30:59 msvsc01-g09np before-remote[29268]: check handlers for addr: zzzzzzzzzzzzzzzz.com
Oct 20 18:30:59 msvsc01-g09np before-remote[29268]: Processing handlers...
Qmail handling
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: hook_dir = '/usr/local/psa/handlers/before-queue'
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: recipient[3] = yyyyyyyyyyyyyyyy.com
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: handlers dir = '/usr/local/psa/handlers/before-queue/recipient/yyyyyyyyyyyyyyyy.com '
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: call executable = '/usr/local/psa/handlers/info/20-drweb-MZX9NW/executable'
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: handlers_stderr: PASS
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: PASS during call '/usr/local/psa/handlers/info/20-drweb-MZX9NW/executable' handler
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: recipient[4] = 'zzzzzzzzzzzzzzzz.com'
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: handlers dir = '/usr/local/psa/handlers/before-queue/recipient/zzzzzzzzzzzzzzzz.com'
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: call executable = '/usr/local/psa/handlers/info/20-drweb-FoRKet/executable'
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: handlers_stderr: PASS
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: PASS during call '/usr/local/psa/handlers/info/20-drweb-FoRKet/executable' handler
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: call executable = '/usr/local/psa/handlers/info/10-spf-d7R8jL/executable'
DrWeb Virus Check
Oct 20 18:31:00 msvsc01-g09np qmail-queue[29271]: scan: the message(drweb.tmp.j0zApu) sent by xxxxxxxxxxxxxxxx.com to rcpts is passed
SPF Checking
Oct 20 18:31:00 msvsc01-g09np spf filter[29273]: Starting spf filter...
Oct 20 18:31:00 msvsc01-g09np spf filter[29273]: Error code: (2) Could not find a valid SPF record
Oct 20 18:31:00 msvsc01-g09np spf filter[29273]: Failed to query MAIL-FROM: No DNS data for 'cadbury.com'.
Oct 20 18:31:00 msvsc01-g09np spf filter[29273]: SPF result: none
Oct 20 18:31:00 msvsc01-g09np spf filter[29273]: SPF status: REJECT
SPF Checked and Failed?! = Message rejected. 504 error returned.
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: handlers_stderr: REJECT
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: REJECT during call '/usr/local/psa/handlers/info/10-spf-d7R8jL/executable' handler
Oct 20 18:31:00 msvsc01-g09np before-queue[29266]: call_handlers: stop call handlers from dir '/usr/local/psa/handlers/before-queue/global'
Oct 20 17:31:00 msvsc01-g09np postfix/smtpd[29264]: disconnect from unknown[192.208.34.37]
Oct 20 18:31:00 msvsc01-g09np before-remote[29268]: Lost connection
Oct 20 18:31:00 msvsc01-g09np before-remote[29268]: Some error occured
Oct 20 17:31:00 msvsc01-g09np postfix/smtpd[29269]: lost connection after DATA from unknown[127.0.0.1]
Oct 20 17:31:00 msvsc01-g09np postfix/smtpd[29269]: disconnect from unknown[127.0.0.1]
答案1
如果有问题的域名是 cadbury.com 或 cadburyschweppes.com，即日志中 IP 地址的 PTR...那么 SPF 记录不存在。
您可能希望在没有 SPF 记录时不失败，只有当 SPF 记录与您正在通信的 IP 地址不匹配时才会失败。并非每个域名都有 SPF 记录，并且它不是发送电子邮件的必要条件...