我在专用服务器上安装了 Postfix (2.6)。
当我尝试向不存在的域发送消息时，我的 mail.log 中出现以下行：
postfix/smtpd[11069]: NOQUEUE: reject: RCPT from [..omitted..][x.x.x.x]: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<test.mydomain.com>
在我的配置中我有：
smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, reject_invalid_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, check_client_access hash:/etc/postfix/rbl_override,permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_rbl_client tor.dnsbl.sectoor.de=127.0.0.1
因此，邮件日志中的错误是正确的。目前，电子邮件尚未放入队列，并被默默拒绝。
有没有办法向发件人发送拒绝消息（传递状态通知？）（在示例中，[电子邮件保护])？
答案1
您可以使用通知类
# main.cf
error_notice_recipient = [email protected]
notify_classes = resource, software, policy
发送简单邮件
# echo "Hello world" | swaks -4 --server localhost --from [email protected] --to [email protected] --h-Subject "Test message" --body -
=== Trying localhost:25...
=== Connected to localhost.
<- 220 smtp.example.net ESMTP Postfix
-> EHLO jenkins.example.net
<- 250-smtp.example.net
<- 250-PIPELINING
<- 250-SIZE 10240000
<- 250-VRFY
<- 250-ETRN
<- 250-ENHANCEDSTATUSCODES
<- 250-8BITMIME
<- 250 DSN
-> MAIL FROM:<[email protected]>
<- 250 2.1.0 Ok
-> RCPT TO:<[email protected]>
<** 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found
-> QUIT
<- 221 2.0.0 Bye
=== Connection closed with remote host.
检查邮件日志
# cat /var/log/maillog
Mar 18 14:47:32 ci postfix/postfix-script[24049]: starting the Postfix mail system
Mar 18 14:47:32 ci postfix/master[24050]: daemon started -- version 2.6.6, configuration /etc/postfix
Mar 18 14:47:34 ci postfix/smtpd[24057]: connect from localhost[127.0.0.1]
Mar 18 14:47:34 ci postfix/smtpd[24057]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<jenkins.example.net>
Mar 18 14:47:34 ci postfix/cleanup[24060]: 2543E1C0979: message-id=<[email protected]>
Mar 18 14:47:34 ci postfix/smtpd[24057]: disconnect from localhost[127.0.0.1]
Mar 18 14:47:34 ci postfix/qmgr[24053]: 2543E1C0979: from=<[email protected]>, size=922, nrcpt=1 (queue active)
Mar 18 14:47:34 ci postfix/virtual[24061]: 2543E1C0979: to=<[email protected]>, orig_to=<[email protected]>, relay=virtual, delay=0.05, delays=0.03/0.01/0/0.01, dsn=2.0.0, status=sent (delivered to maildir)
Mar 18 14:47:34 ci postfix/qmgr[24053]: 2543E1C0979: removed
您将收到类似以下内容
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: by smtp.example.net (Postfix)
id 2543E1C0979; Fri, 18 Mar 2016 14:47:34 +0000 (UTC)
Date: Fri, 18 Mar 2016 14:47:34 +0000 (UTC)
From: [email protected] (Mail Delivery System)
To: [email protected] (Postmaster)
Subject: Postfix SMTP server: errors from localhost[127.0.0.1]
Message-Id: <[email protected]>
Transcript of session follows.
Out: 220 smtp.example.net ESMTP Postfix
In: EHLO jenkins.example.net
Out: 250-smtp.example.net
Out: 250-PIPELINING
Out: 250-SIZE 10240000
Out: 250-VRFY
Out: 250-ETRN
Out: 250-ENHANCEDSTATUSCODES
Out: 250-8BITMIME
Out: 250 DSN
In: MAIL FROM:<[email protected]>
Out: 250 2.1.0 Ok
In: RCPT TO:<[email protected]>
Out: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not
found
In: QUIT
Out: 221 2.0.0 Bye
For other details, see the local mail logfile