![Exim 电子邮件遭黑客入侵或 Backscatter 攻击](https://linux22.com/image/661904/Exim%20%E7%94%B5%E5%AD%90%E9%82%AE%E4%BB%B6%E9%81%AD%E9%BB%91%E5%AE%A2%E5%85%A5%E4%BE%B5%E6%88%96%20Backscatter%20%E6%94%BB%E5%87%BB.png)
我已经为客户安装了 Exim 服务器,今天早上醒来发现 Hotmail 大约有 100 次退回邮件,内容如下:
Undelivered Mail Returned to Sender
通过谷歌搜索我遇到了反向散射问题,但是我不确定为什么我的邮件服务器会在出站队列中显示电子邮件。
[root@vesta msglog]# exim -bp
71m 2.5K 1ZC6Ap-0005KE-Un <[email protected]>
MariseYFaria@
D heliogalvao@
D paulakunath@
D eve_junkera@
D fabiobt@
D leidegis@
D jarbasbueno@
D heluquisa2004@
D guig.soares@
D fhr1980@
D sirnagovino@
该邮件主题似乎是一堆发往恶意网站的垃圾邮件。
标头如下:
[root@vesta msglog]# exim -Mvh 1ZC6Ap-0005KE-Un
1ZC6Ap-0005KE-Un-H
exim 93 93
<[email protected]>
1436188263 0
-helo_name stevedomain.com
-host_address 46.177.21.185.51075
-host_name ppp046177021185.access.hol.gr
-host_auth dovecot_plain
-interface_address 109.X.X.X.69.587
-received_protocol esmtpa
-body_linecount 41
-max_received_linelength 86
-auth_id [email protected]
YY heliogalvao@
YY fabiobt@
NN eve_junkera@
YN guig.soares@
NN fhr1980@
YY paulakunath@
YY jarbasbueno@
NN heluquisa2004@
NN leidegis@
NN sirnagovino@
11
MariseYFaria@
heliogalvao@
paulakunath@
eve_junkera@
fabiobt@
leidegis@
jarbasbueno@
heluquisa2004@
guig.soares@
fhr1980@
sirnagovino@
226P Received: from ppp046177021185.access.hol.gr ([46.177.21.185] helo=stevedomain.com)
by vesta.slidomain.co.uk with esmtpa (Exim 4.72)
(envelope-from <[email protected]>)
id 1ZC6Ap-0005KE-Un; Mon, 06 Jul 2015 14:11:04 +0100
063I Message-ID: <[email protected]>
044F From: "veribenassi" <[email protected]>
471T To: "Marise Yaine" <MariseYFaria@>,
"Helinho" <heliogalvao@>,
"Kunath" <paulakunath@>, "Evelyn" <eve_junkera@>,
"Fabio Junqueira" <[email protected]>, "Gisleide" <leidegis@>,
"Jarbas" <jarbasbueno@>,
"iso 8859 1 B SGVs9A" <heluquisa2004@>,
"Guilherme gmail" <guig.soares@>,
"Fernando Henrique" <fhr1980@>,
"Janaina Sirna Govino" <sirnagovino@>
055 Subject: =?ISO-8859-1?Q?6=2F26=2F2015_2=3A10=3A57_PM?=
038 Date: Thu, 26 Jun 2015 02:10:57 +0000
018 MIME-Version: 1.0
091 Content-Type: multipart/alternative;
boundary="----=_NextPart_000_5B24_83A7AFF1.337DC5C4"
014 X-Priority: 3
026 X-MSMail-Priority: Normal
019 Importance: Normal
052 X-Mailer: Microsoft Windows Live Mail 16.4.3522.110
056 X-MIMEOLE: Produced By Microsoft MimeOLE V16.4.3522.110
我如何确认我的邮件服务器发生了什么?除了 Fail2Ban 阻止的通常的暴力 ssh 之外,我看不到任何进入框的条目。