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?
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...
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.
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.
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):
(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.
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
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.
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.
Microsoft Windows Server 2008 R2 Service Pack 1 Panel version 11.0.9 Update #59, last updated at Oct 3, 2013 02:06 AM MailEnable version 5
I see in the plesk documentation that the screen to enable SPAM filtering for an individual there is an option to "Move spam to the Spam folder". I don't see that option so I am wondering if it is only available on some versions of Plesk, or in combination with certain mail servers. How to make that option available?
This is the qmail-send program at ultimatemedicalresearch.theplanet.host.
I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<abc@xyz.com>: TLS connect failed: error:14077410SL routinesSL23_GET_SERVER_HELLOslv3 alert handshake failure; connected to <IP>. I'm not going to try again; this message has been in the queue too long.
Executed the following commands as root on both servers (recipient and sender):
openssl s_client -connect [host]:993 returns OK both ways. openssl s_client -connect [host]:995 returns OK both ways. openssl s_client -connect [host]:465 very slow response. CONNECTED(00000003) appears then it waits for quite some time (>20s). Then it says: 30179:error:14077410SL routinesSL23_GET_SERVER_HELLOslv3 alert handshake failure23_clnt.c:578. This is shown only when I execute the command on server 1. Server 2 hangs also but returns the 220 message which is OK.
It is odd that the above commands return different certificates, not the ones that are set up on the servers. I am using Plesk, I have set up my certificates and assigned them to those IP addresses.
What could be done to make the mailing system between these two server to work ?
