如何从命令行检查 smtp 是否正常工作 (Linux)
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How to check if smtp is working from commandline (Linux)
提问by balanv
I have a SMTP-server, for the purpose of this question lets call it: smtp.mydomain.com.
我有一个 SMTP 服务器，为了这个问题，我们称之为：smtp.mydomain.com。
How do i check if the SMTP-server is in working? Can I send emails manually from Linux commandline?
我如何检查 SMTP 服务器是否在工作？我可以从 Linux 命令行手动发送电子邮件吗？
采纳答案by balanv
Syntax for establishing a raw network connection using telnet is this:
使用 telnet 建立原始网络连接的语法是这样的：
telnet {domain_name} {port_number}
So telnet to your smtp server like
所以 telnet 到你的 smtp 服务器，就像
telnet smtp.mydomain.com 25
And copy and paste the below
并复制并粘贴以下内容
helo client.mydomain.com
mail from:<[email protected]>
rcpt to:<[email protected]>
data
From: [email protected]
Subject: test mail from command line
this is test number 1
sent from linux box
.
quit
Note :Do not forgot the "." at the end which represents the end of the message. The "quit" line exits ends the session.
注意：不要忘记“。” 在代表消息结束的末尾。“退出”行退出结束会话。
回答by Satish
[root@piwik-dev tmp]# mail -v root@localhost
Subject: Test
Hello world
Cc: <Ctrl+D>
root@localhost... Connecting to [127.0.0.1] via relay...
220 piwik-dev.example.com ESMTP Sendmail 8.13.8/8.13.8; Thu, 23 Aug 2012 10:49:40 -0400
>>> EHLO piwik-dev.example.com
250-piwik-dev.example.com Hello localhost.localdomain [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
>>> MAIL From:<[email protected]> SIZE=46
250 2.1.0 <[email protected]>... Sender ok
>>> RCPT To:<[email protected]>
>>> DATA
250 2.1.5 <[email protected]>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
250 2.0.0 q7NEneju002633 Message accepted for delivery
root@localhost... Sent (q7NEneju002633 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 piwik-dev.example.com closing connection
回答by ehsun7b
Not sure if this help or not but this is a command line tool which let you simply send test mails from a SMTP server priodically. http://code.google.com/p/woodpecker-tester/
不确定这是否有帮助，但这是一个命令行工具，可让您简单地定期从 SMTP 服务器发送测试邮件。http://code.google.com/p/woodpecker-tester/
回答by Thufir
The only thing about using telnet to test postfix, or other SMTP, is that you have to know the commands and syntax. Instead, just use swaks:)
使用 telnet 测试 postfix 或其他 SMTP 的唯一问题是您必须知道命令和语法。相反，只需使用swaks:)
thufir@dur:~$
thufir@dur:~$ mail -f Maildir
"/home/thufir/Maildir": 4 messages
> 1 [email protected] 15/553 test Mon, 30 Dec 2013 10:15:12 -0800
2 [email protected] 15/581 test Mon, 30 Dec 2013 10:15:55 -0800
3 [email protected] 15/581 test Mon, 30 Dec 2013 10:29:57 -0800
4 [email protected] 15/581 test Mon, 30 Dec 2013 11:54:16 -0800
? q
Held 4 messages in /home/thufir/Maildir
thufir@dur:~$
thufir@dur:~$ swaks --to [email protected]
=== Trying dur.bounceme.net:25...
=== Connected to dur.bounceme.net.
<- 220 dur.bounceme.net ESMTP Postfix (Ubuntu)
-> EHLO dur.bounceme.net
<- 250-dur.bounceme.net
<- 250-PIPELINING
<- 250-SIZE 10240000
<- 250-VRFY
<- 250-ETRN
<- 250-STARTTLS
<- 250-ENHANCEDSTATUSCODES
<- 250-8BITMIME
<- 250 DSN
-> MAIL FROM:<[email protected]>
<- 250 2.1.0 Ok
-> RCPT TO:<[email protected]>
<- 250 2.1.5 Ok
-> DATA
<- 354 End data with <CR><LF>.<CR><LF>
-> Date: Mon, 30 Dec 2013 14:33:17 -0800
-> To: [email protected]
-> From: [email protected]
-> Subject: test Mon, 30 Dec 2013 14:33:17 -0800
-> X-Mailer: swaks v20130209.0 jetmore.org/john/code/swaks/
->
-> This is a test mailing
->
-> .
<- 250 2.0.0 Ok: queued as 52D162C3EFF
-> QUIT
<- 221 2.0.0 Bye
=== Connection closed with remote host.
thufir@dur:~$
thufir@dur:~$ mail -f Maildir
"/home/thufir/Maildir": 5 messages 1 new
1 [email protected] 15/553 test Mon, 30 Dec 2013 10:15:12 -0800
2 [email protected] 15/581 test Mon, 30 Dec 2013 10:15:55 -0800
3 [email protected] 15/581 test Mon, 30 Dec 2013 10:29:57 -0800
4 [email protected] 15/581 test Mon, 30 Dec 2013 11:54:16 -0800
>N 5 [email protected] 15/581 test Mon, 30 Dec 2013 14:33:17 -0800
? 5
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: from dur.bounceme.net (localhost [127.0.0.1])
by dur.bounceme.net (Postfix) with ESMTP id 52D162C3EFF
for <[email protected]>; Mon, 30 Dec 2013 14:33:17 -0800 (PST)
Date: Mon, 30 Dec 2013 14:33:17 -0800
To: [email protected]
From: [email protected]
Subject: test Mon, 30 Dec 2013 14:33:17 -0800
X-Mailer: swaks v20130209.0 jetmore.org/john/code/swaks/
Message-Id: <[email protected]>
This is a test mailing
New mail has arrived.
? q
Held 5 messages in /home/thufir/Maildir
thufir@dur:~$
It's just one easy command.
这只是一个简单的命令。
