Server Sending Spam
Jan 11, 2009
I currently have a dedicated server, Linux, with 1 website on it that is sending spam.
At first I thought it was someone spoofing my email address, however when I check my servers Email queue I can see the spam emails in there being sent.
My problem is that I have contacted my server provider and support for the scripts I'm running and everyone is saying its the other persons fault. My server provider is saying everything is up to date and it must be a software exploit on one of my scripts, and the support team from my software is saying its not them that its the server.
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Apr 2, 2007
got a 2nd notice from my ISP complaining that spams are being sent from my dedicated box. Since the first notice, I had stopped all the mail-related services (sendmail, mailman, courier-imap), which means no emails will be sent out from this box. However, I still received the 2nd notice for spamming.
own dedicated box running CentOS 4.2 with Plesk 8.1. 1 site hosted on it.
concerns are
1. Is my box hacked in and hijacked to send out spam? If yes, how can I check for system integrity?
2. Based on the service status dump, is there something else I need to do in the meantime to stop the box from sending out spam?
3. If there's someone who willing to help out, I'm willing to pay a small amount (~$50, sorry I'm broke!) to fix the server and just kinda help me through the process.
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Nov 8, 2014
I have a Plesk v12.0.18_build1200140606.15 os_CentOS 6 server. using postfix
And Lots of spam is send from my server.
I tried: [URL] .... but with no results.
on the moment the /var/log/maillog file is over 5,5GB
and the /var/log/maillog.processed is over 7,2GB and splitted into multiple .gz files
What can I do to find the source of the problem and stop it ?
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Jul 24, 2014
Somebody is sending spam from my postfix server.
How can I locate the domain causing the problem?
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Feb 13, 2007
someone is sending spam using my smtp on qmail. I have authentication on sending messages, but my host company is complaining about spam messages that are sending to numerous emails. is there any solution? or how to fix that...
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Sep 17, 2007
I have been able to get my server to notify me fast enough so I can delete the account and all he messages sent by that user fast enough. Taking to long might result in getting blacklisted, etc..
So, my question is, how can I prevent something like this? Isn't there a way to completely disable mail for an account (cPanel server) so they can't send mail in the first place? Or, is there a way to somehow silently discard all the eMail sent by a user in a specific group?
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Jun 5, 2009
one of our dedicate server which host only one website and use vbulletin.
we are unhappy about sending mail and it goes to spam box.
but we see that some website send many mail. for examle they have 1,000,000 user and send email to them every day.but their email send to inbox
what can we do about it?
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Dec 3, 2008
i have been receiving lot of spam emails with from and to address being the same email of my domain with content being "click here to see web page" or an image link of viagra shop seen. sometimes it is sent with title "delivery status failure"
i checked the mail headers and it seems that they do not originate with contact form since i used captcha to protect them.
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Aug 29, 2007
Yesterday my mail logs started showing many a spam email being sent from my server. There isn't anything mission critical running on it, so I took down qmail until I could find the vulnerability and fix it. But try as I might, I haven't found any conclusive vulnerability, so I thought to ask here where someone with more experience might spot something obvious that I've missed (I'm still somewhat new to this).
Anyway, the qmail logs show that the messages came from uid 48, apache. Log excerpt (sending of first spam mail):
Quote:
Aug 28 11:10:51 host qmail-queue[8056]: mail: all addreses are uncheckable - need to skip scanning (by deny mode)
Aug 28 11:10:51 host qmail-queue[8056]: scan: the message(drweb.tmp.TNDOi2) sent by anonymous@HOSTNAME to SPAMADDRESS should be passed without checks, because contains uncheckable addresses
Aug 28 11:10:51 host qmail: 1188295851.742521 new msg 51970054
Aug 28 11:10:51 host qmail: 1188295851.742679 info msg 51970054: bytes 445 from <anonymous@HOSTNAME> qp 8057 uid 48
Aug 28 11:10:51 host qmail: 1188295851.752799 starting delivery 460: msg 51970054 to remote SPAMADDRESS
Aug 28 11:10:51 host qmail: 1188295851.752933 status: local 0/10 remote 1/20
Unfortunately, my Apache logs have no entries around the time when these messages were sent. There are some suspect "CONNECT" requests scattered throughout the logs, but all are denied with 405's, and none correspond exactly with the time of the spam. Example (from about 3 hours after the spam):
Quote:
210.17.191.242 - - [28/Aug/2007:14:34:43 +0100] "CONNECT 205.158.62.146:25 HTTP/1.0" 405 235 "-" "-"
210.17.191.242 - - [28/Aug/2007:14:34:43 +0100] "PUT [url]
HTTP/1.0" 405 231 "-" "-"
210.17.191.242 - - [28/Aug/2007:14:34:43 +0100] "POST [url]
HTTP/1.0" 200 2 "-" "-"
(The fact that the final query wasn't denied worries me slightly though. Does anyone have any insight?)
I'm not sure where to go from here. I'm concerned about the lack of logs by Apache. There's a nine hour period without any entries; not unusual for my server given that its not very active, but the time when the spam was sent falls in this time period. I've checked for common security issues, but qmail is configured only to relay from localhost, and Apache isn't configured as an open proxy. Are there any other common issues I should check for? Is there any other information I should post here to help identify the problem?
I'm running Apache version 2.0.52, and qmail 1.03.
I'd be very grateful for any help or links to relevant HOWTOs.
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Dec 24, 2007
My server is being used for sending out spam email using SMTP auth on server. I am failed to recognize it using phpnobody spam.
The email headers are as below:
[root@serverl ~]# /root/qmHandle -m38168420
--------------
MESSAGE NUMBER 38168420
--------------
Received: (qmail 19615 invoked from network); 21 Dec 2007 11:14:02 -0500
Received: from 124-8-103-212.dynamic.tfn.net.tw (HELO lzbldm) (124.8.103.212)
by ip-xx-xx-xxx-229.static.priatdns.com with SMTP; 21 Dec 2007 11:14:02 -0500
Message-ID: <003761451621$48031823$28802762@lzbldm>
From: =?big5?B?uPKmaL5sqs6m17uh2VTZVA==?= <twzcgj@ip-72-55-159-229.static.pedns.com>
To: <ahyu327@yahoo.com.tw>,
<r820309@yahoo.com.tw>,
<janejanexxx@yahoo.com.tw>,
<mirror8210@yahoo.com.tw>,
<angr34@yahoo.com.tw>,
<sungerhuang@yahoo.com.tw>,
<andy422927@yahoo.com.tw>,
<a155882@yahoo.com.tw>,
<tsai1926@yahoo.com.tw>,
<87878787@yahoo.com.tw>,
<joe-5409@yahoo.com.tw>
Subject: =?big5?B?s2+xTqxPp0GzzKvhpECmuLTuqs4=?=
Date: Sat, 22 Dec 2007 00:14:39 +0800
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0748_01590CDE.19AA17B0"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.3198
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198
This is a multi-part message in MIME format.
The qmail logs are as below
Dec 23 04:22:02 serverl qmail: 1198401722.886024 end msg 38163426
Dec 23 04:22:02 serverl qmail: 1198401722.886435 new msg 38163440
Dec 23 04:22:02 serverl qmail: 1198401722.886630 info msg 38163440: bytes 5274 from <> qp 21043 uid 2522
Dec 23 04:22:02 serverl qmail: 1198401722.897484 starting delivery 247946: msg 38163440 to remote jr1979@freenet.de
Dec 23 04:22:02 serverl qmail: 1198401722.897706 status: local 0/10 remote 9/20
Dec 23 04:22:03 serverl qmail: 1198401723.035092 delivery 247944: failure: 195.4.92.17_does_not_like_recipient./Remote$
Dec 23 04:22:03 serverl qmail: 1198401723.035296 status: local 0/10 remote 8/20
Dec 23 04:22:03 serverl qmail-queue[21076]: mail: all addreses are uncheckable - need to skip scanning (by deny mode)
Dec 23 04:22:03 serverl qmail-queue[21076]: scan: the message(drweb.tmp.fkOXLe) sent by #@[] to postmaster@cl-t061-160$
Dec 23 04:22:03 serverl qmail: 1198401723.192176 bounce msg 38163423 qp 21076
Dec 23 04:22:03 serverl qmail: 1198401723.192241 end msg 38163423
Dec 23 04:22:03 serverl qmail: 1198401723.193683 new msg 38163429
Dec 23 04:22:03 serverl qmail: 1198401723.193930 info msg 38163429: bytes 5878 from <#@[]> qp 21092 uid 2522
Dec 23 04:22:03 serverl qmail: 1198401723.220191 starting delivery 247947: msg 38163429 to local 9-postmaster@cl-t061-$
Dec 23 04:22:03 serverl qmail: 1198401723.220247 status: local 1/10 remote 8/20
Dec 23 04:22:03 serverl qmail-local-handlers[21111]: starter: submitter[21118] with error code 100
Dec 23 04:22:03 serverl qmail-local-handlers[21111]: mailsend: wait for submitter failed
Dec 23 04:22:03 serverl qmail-local-handlers[21111]: cannot reinject message to mail system
Dec 23 04:22:03 serverl qmail: 1198401723.270544 delivery 247947: failure: This_address_no_longer_accepts_mail./
Dec 23 04:22:03 serverl qmail: 1198401723.270720 status: local 0/10 remote 8/20
Dec 23 04:22:03 serverl qmail: 1198401723.270863 triple bounce: discarding bounce/38163429
Dec 23 04:22:03 serverl qmail: 1198401723.270906 end msg 38163429
Dec 23 04:22:03 serverl pop3d:
Dec 23 04:22:03 serverl qmail: 1198401723.821852 delivery 247946: failure: 195.4.92.17_does_not_like_recipient./Remote$
Dec 23 04:22:03 serverl qmail: 1198401723.821918 status: local 0/10 remote 7/20
Dec 23 04:22:03 serverl pop3d: IMAP connect from @ [71.107.192.162]INFO: LOGIN, user=support, ip=[71.107.192.162]
Dec 23 04:22:03 serverl qmail-queue[21226]: mail: all addreses are uncheckable - need to skip scanning (by deny mode)
Dec 23 04:22:03 serverl qmail-queue[21226]: scan: the message(drweb.tmp.Ge7OVb) sent by #@[] to postmaster@cl-t061-160$
Dec 23 04:22:04 serverl qmail: 1198401724.007097 bounce msg 38163440 qp 21226
Dec 23 04:22:04 serverl qmail: 1198401724.007177 end msg 38163440
Dec 23 04:22:04 serverl qmail: 1198401724.008599 new msg 38163295
Dec 23 04:22:04 serverl qmail: 1198401724.008829 info msg 38163295: bytes 5837 from <#@[]> qp 21240 uid 2522
Dec 23 04:22:04 serverl qmail: 1198401724.042842 starting delivery 247948: msg 38163295 to local 9-postmaster@cl-t061-$
Dec 23 04:22:04 serverl qmail: 1198401724.042898 status: local 1/10 remote 7/20
Dec 23 04:22:04 serverl qmail-local-handlers[21255]: starter: submitter[21262] with error code 100
Dec 23 04:22:04 serverl qmail-local-handlers[21255]: mailsend: wait for submitter failed
Dec 23 04:22:04 serverl qmail-local-handlers[21255]: cannot reinject message to mail system
Dec 23 04:22:04 serverl qmail: 1198401724.089046 delivery 247948: failure: This_address_no_longer_accepts_mail./
Dec 23 04:22:04 serverl qmail: 1198401724.089108 status: local 0/10 remote 7/20
I tried to grep some more information agains UID but failed:
[root@serverl ~]# grep 2020 /etc/passwd
alias:x:2021:2020:Qmail User:/var/qmail/alias:/bin/false
qmaild:x:2020:2020:Qmail User:/var/qmail/:/bin/false
qmaill:x:2022:2020:Qmail User:/var/qmail/:/bin/false
qmailp:x:2023:2020:Qmail User:/var/qmail/:/bin/false
[root@serverl ~]# grep 2522/etc/passwd
[root@serverl ~]# grep 2522 /etc/passwd
qmails:x:2522:2520:Qmail User:/var/qmail/:/bin/false
psaftp:x:2524:2522:anonftp psa user:/:/bin/false
how can i catch this spammer domain name hosted on my server. Its CentOS Plesk 8 Server.
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Mar 28, 2008
I have a Qmail server that is using relays.ordb.org
As you probaly know this shut down two years ago. But is now sending all requests as spam. No one is recieving there emails.
this a Standard Qmail,with a hacked qmail-send witch intergrates with Mysqld.
is not installed with qmailroks, or supervise. Can't find the config text file.
how can we remove traces or referrences to relays ordb.org
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Feb 22, 2007
My server running mailenable is possibly sending out spam because ive had a returned mail saying my IP is on a blacklist at CBL.
IP Address 64.X.X.10 was found in the CBL.
It was detected at 2007-02-17 13:00 GMT (+/- 30 minutes), approximately 5 days, 5 hours, 30 minutes ago.
However when i checked my smtp and pop logs i only see small ammounts of mail thats been delivered.
When I run the netstat command have the following connections. The ones to the .nl domain looks strange
C:Documents and SettingsAdministrator>netstat
Active Connections
Proto Local Address Foreign Address State
TCP server:telnet server.indis.nl:3409 CLOSE_WAIT
TCP server:telnet server.indis.nl:3410 CLOSE_WAIT
TCP server:epmap dsl10-037.express.oricom.ca:2253 ESTABLISHED
TCP server:1121 ipchicken.com:http CLOSE_WAIT
TCP server:1122 ipchicken.com:http CLOSE_WAIT
TCP server:1136 ipchicken.com:http CLOSE_WAIT
TCP server:1138 ipchicken.com:http CLOSE_WAIT
TCP server:1199 ecostumeshop.com:domain ESTABLISHED
TCP server:telnet server.indis.nl:3326 CLOSE_WAIT
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May 28, 2009
i have a vps but there is too much process called mailnull
after that the data centre closed my server for being sent spam
so how i can catch the user sending spam with mailnull?
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Mar 13, 2015
My postfix is sending huge amounts of e-mail that I was forced to stop postfix.
Even if I set relaying to closed, disable message submission and disable sendmail spam is still being send..
Outgoing mail control reports nothing at all, and if I check my server with online tools to be sure it is not relaying everything is reported fine.
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Nov 4, 2008
Issues sending mail to Yahoo, and mail getting marked as spam, Whats a good solution? ...
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Jun 19, 2007
I migrated a client from a Windows server to Linux and everything is fine except that mail sent to this client (say, example1.com) from a particular domain (say, example2.com) simply disappears and does not reach at all. Mail sent to that other domain (example2.com) from my new client (example1.com) is delivered correctly.
Incidentally, that other domain (example2.com) from which the mail is sent is with the hosting provider who was earlier providing services for my newly acquired client. Should I suspect anything? Or, is there a way to figure out what's happening?
I have MailScanner running on my VPS, but it isn't configured to filter at RBL level, only at Exim level, so I don't think this is the issue.
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Jul 25, 2008
my server is still effed up from the MPack attack that I received.
I just received the following email, does anyone know what this means or how it could be done? The client IP is mine, so some how my server is sending that request?
72.233.79.2 (malwarebytes.org) Server Log:
[Thu Jul 24 13:05:07 2008] [error] [client 72.55.184.144] mod_security:
Access denied with code 403. Pattern match ".../" at THE_REQUEST
[id "300006"] [rev "1"] [msg "Bogus Path denied"] [severity "CRITICAL"]
[hostname "www.malwarebytes.org"] [uri
"/errors.php?error=[url][unique_id "tNAGeH8AAAEAAEsfD7wAAAAO"]
[Thu Jul 24 13:05:07 2008] [error] [client 72.55.184.144] mod_security:
Access denied with code 403. Pattern match ".../" at THE_REQUEST
[id "300006"] [rev "1"] [msg "Bogus Path denied"] [severity "CRITICAL"]
[hostname "www.malwarebytes.org"] [uri
"/forums/errors.php?error=[url][unique_id
"tNAPAn8AAAEAAD7mqWQAAAAl"]
[url]is the RKHunter scan log
[url]is the ChkRootKit scan log.
I'm going through this thread right now:
[url]("How-to detect a possible intruder?") and I've come across a handful of hidden directories:
/home/mifbody/public_html/vbulletin/arcade/images/. /. /xh
/home/mifbody/public_html/vbulletin/arcade/images/. /. /xhide.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/convertxdccfile.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_admin.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_dccchat.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_display.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_main.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_md5.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_misc.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_statefile.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_transfer.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_upload.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /obj/iroffer_utilities.o
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/convertxdccfile.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_admin.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_config.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_dccchat.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_defines.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_display.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_globals.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_headers.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_main.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_md5.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_md5.h
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_misc.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_statefile.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_transfer.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_upload.c
/home/mifbody/public_html/vbulletin/arcade/images/. /. /src/iroffer_utilities.c
I was able to successfully delete all the files, but how do I now get rid of the directories themselves? When I do:
rm -fr "/arcade/images/. /"
and then locate ". "
I still get:
/home/mifbody/public_html/vbulletin/adserver/banners/.
/home/mifbody/public_html/vbulletin/alice/src/admin/.
/home/mifbody/public_html/vbulletin/arcade/images/.
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Mar 24, 2009
I am using Shopping Script, There is again constant problem of 'Helpdesk notification' not being send to Admin email.
Sometimes Helpdesk notification emails comes, sometimes not.
In order to start getting Helpdesk notification email, i need to restart my server and it starts working.
It means there is nothing wrong with Shopping script, as it starts working as soon as server is restarted.
I am running on Windows 2003 server, with IIS support.
This is the reply i got from Script support
------------------------------------------------------------
It's not in our compatibility but we can propose a couple of advice to you:
1) You can test the php function mail() which is responsible for this process;
For this you may create a simple script with the following line:
mail($mail_to, $mail_subject, $mail_body, $headers_string)
Of course, you need to past your own real values here. Then you need to launch this script every minute since the server restarted and follow the logs of what is happening there.
2) As we see you are using Microsoft FTP Service. The most probable reason for this is the issue with windows mail function - either the service itself is not reliable or it is just set incorrectly. Our administrator says that the issue with mail sending on this server happens quite often. So you can try to google the problem with the queue of windows mail function, for sure there must be some more advice as to how to resolve this.
It is possible that there is set a restriction on the order of the sending mail so when the queue is full, the mail stops sending.
Anyway that's all that we can advise you on this case because if the notification is sent at all then it means this function is working in our shopping cart and the issue is with something else.
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Jun 8, 2009
I have a client who is a media company and is interested in using a dedicated server in order to send their daily e-newsletters by email. The server will only host a script for handling the email distribution and email database.
They need to send approximately 20,000 emails every working day, in blocks of 5,000 emails. Each email includes an attached PDF file of 3Mb (this means less than 2,000Gb of bandwidth every month). They want each block of 5,000 emails to be sent within maximum 2 hours.
Please let me know the suggested configuration for a server to handle this email load.
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Feb 13, 2008
i've new server with 2 ips ,
i can't send emails to hotmail
i made spf , domainkey , rDNS
everything is ok , i contacted Hotmail to be part of SenderId program ,and told me 2 days and sending will be ok , i waited for 10 days , till now every new member can't recive ctivation email , what shall i do ??????
My server not open relays ... Not in blacklist ....
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