Unsolicited e-mail, comments or posts, often sent out in large volumes; possibly but not necessarily commercial in nature

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25 views

How to stop server sending spam out. Centos server with exim

I'm looking at a server that appears to have been compromised via a bug in a wordpress plugin and is now sending spam out. This post seems to give a very good report of exactly what I'm seeing. ...
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1answer
10 views

What Does 'HELO_LH_HOME' Means In Spamassassin's result?

I'm trying to send emails from PHPMailer using php on my IIS server. But My emails are going to spam, So I've used spamassasin to detect what is wrong? and here is the result: pts rule name ...
1
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1answer
31 views

Outgoing Spam through hacked Mail Accounts

Already searched some Hours about this Problem - but no good Solution in sight - so maybe someone here can help me on this. We offer Webhosting / Mail Services. Lately the amount of Hacked E-Mail ...
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0answers
16 views

Find the source of spam-script

We have a shared hosting cgi-server with apache2+php fcgi and dma as mta (it forwards messages to mail relay) - it's Debian Wheezy - on it and with ability for clients to run perl/cgi scripts.There's ...
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2answers
64 views

Is my Postfix sending spam?

In my Rsys log I am getting weird email requests that are not initiated by my server: Nov 17 09:32:18 localhost postfix/qmgr[21748]: 8E52272C09: from=<>, size=33770, nrcpt=1 (queue active) Nov ...
2
votes
1answer
27 views

Postfix and smtpd_client_rate_limit to detect compromissed accounts

Some of our clients are administrators who need to send corporative messages to no more than 300 clients, specifying all of these clients together in the "To:" fields, instead of individual messages ...
3
votes
3answers
94 views

Postfix and compromised accounts

First of all, sorry for my English. I think it's very common to set the permit_mynetworks and permit_sasl_authenticated restrictions on first positions of the smtpd_recipient_restriction list, but, ...
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0answers
18 views

POSTFIX How can I block spam with spoofed header that appear to be sent from the recipient's mail address?

I am managing a mail server with some domains on it, I am running postfix and courier on Debian. I am blocking spam by adding rules to the postfix header_checks, but, some domains are receiving spam ...
0
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1answer
46 views

Lot spam from unknown source

Here is the email header and info that I got from aol abuse. This type of emails are being generated from my server randomly at a very low rate and IP is blacklisted very freuqently. After 2 weeks of ...
0
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1answer
56 views

My server is sending out emails with spoofed accounts

I have a windows 2008 R2 server. I am using mailenable proffessional version 7.59. I noticed on MTA logs that random (non-existing) mail accounts are sending spam email. The emails are from a NULL ...
14
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2answers
859 views

What are the best methods for catching snowshoe spam?

I'm using Smartermail for my small mailserver. We've been having a problem lately of getting waves of snowshoe spam that follow the same pattern. They come in batches of 3 or 4 at a time. The ...
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1answer
41 views

Mail is marked as spam by gmail - no idea, why [duplicate]

I'm using my DSL-Business-connection for a small office. I just installed a Mac Mini Server with mail-support and try to send an email to googlemmil, but this mail is getting marked as spam. This is ...
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0answers
20 views

only email from my own server to google apps on the same server end up in spam [duplicate]

Im sending emails from a webshop on my VPS. The emails land nicely in the inbox everywhere, including gmail accounts, EXCEPT for the emails to the owner of the webshop, who has google apps email on ...
-4
votes
0answers
39 views

decreasing the amount of spam from our servers [duplicate]

We are sending emails to our clients on a daily basis. As far as we know, 20% goes to the spam box. We have huge amount of clients and each client can have like 2-3 emails in a day. The emails are not ...
0
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1answer
47 views

How to prevent spam from “as permitted sender” senders?

Looking into my gmail spam folder, I see many messages coming from an old domain. How does it work, that I receive spam from an old account? And, how can I stop these spammers of using the old email ...
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2answers
42 views

Tracing down spam

How can I find the source of out going spam on a linux server? tail -f /var/log/exim_mainlog 2014-10-24 15:02:37 [28750] 1Xhl4A-0007Te-9C Completed QT=7s 2014-10-24 15:02:37 [28746] SMTP ...
0
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2answers
62 views

How to check whether my server turned into a spamming machine?

I am suspecting something is sending a plenty of mails from my server without my knowledge. I'd like to check whether my machine turned into a spamming server. What is the easiest way to do this? ...
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1answer
32 views

Too many sendmail instances in “top” command

I got a server with mysql+php running on it only. Cronned PHP scripts (not available publicly) send occasionally emails, but not more than 10 per hour. However, whenever I type "top" in bash I see ...
0
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1answer
47 views

Parked domains on Spamhaus DBL

I've set up a nameserver to park a bunch of my domains (similiar to sedo, bodis etc). Everything is working well. Unfortunately, all my parked domains are instantly listed at spamhaus (DBL). No mail ...
3
votes
2answers
74 views

Postfix - forward rejected by unknown recepients emails to SPAM-learning mailbox

I have Postfix + BitDefender FRAMS running as hygiene gateway before few Exchanges. BD FRAMS can learn it's Baesian filter by download SPAM and HAM emails from dedicated mailboxes. Because we have ...
2
votes
1answer
37 views

Simple command line plain text spam or ham classifier

I have a load of database entries that have been saved that are full of spam. I would like to be able to pipe the text output of each into a spamassassin or similar tool to be able to get a score on ...
0
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1answer
160 views

Postfix - receiving many “Undelivered Mail Returned to Sender”

I once set up my server using this guide (or a very similar one) But from time to time I have days or weeks of flooding "Undelivered Mail Returned to Sender" to my inbox. Oh and I am using catch-all ...
4
votes
2answers
505 views

Will blocking port 25 on a router cripple outlook clients?

I work at a small ISP, we manage about 60 buildings with p2p radios and a main cisco router at a central location. Recently we were notified that a phishing domain is associated with one of our IPs. ...
0
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1answer
72 views

How do I stop SPAM from being sent from my server? [duplicate]

I have a VPS which I rent and it is running Centos 6. The VPS has ZPanel installed which is used to host some websites and emails. One of my clients has noticed thousands of 'undeliverable' messages ...
0
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1answer
46 views

How many bounces before removing a dead address to avoid recycled spam trap?

We are developing our own mailing tool and scan log and mail error to remove dead mails from our database. When an error 5xx is returned by mails servers, we remove the mail for a determined time ...
2
votes
2answers
75 views

Mail not delivered from custom email server (MS Exchange)

I have my own Exchange Server 2013 (SP1). I am able to receive emails ok but sending emails is not reliable. Emails sent to gmail or seznam.cz (email provider in Czech Republic) is ok. The problem is ...
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0answers
73 views

Barracuda & URLBL_BC rule

Solution I am using is integrated with barracuda spam filtering. My access to barracuda is limited (this is not a full admin account), hence I may not see some global settings. Today barracuda ...
0
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1answer
29 views

Forwarding spam from gmail to email gateway for anti-spam testing

Is it possible to forward all emails that end up in my gmail spam folder to another email address? We're standing up a new anti-spam email gateway and need to generate some real email for testing ...
0
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1answer
26 views

Which E-Mail software generates these spammy mails?

I notice a lot of spammy looking e-mails from suspicious sources. They are not real spam but are unsolicited. You can identify them by containing these headers: X-Mailer-LID: 5 List-Unsubscribe: ...
5
votes
2answers
214 views

Office 365 - what is in the “Sensitive Word List” for spam filtering?

In Office 365 you can toggle a few settings to help with spam email filtering. Among these is a setting to enable a "Sensitive Word List" as shown below: The problem is...I can't find any list on ...
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votes
1answer
51 views

Exchange Server Spam Protection [closed]

I took over an exchange 2010 server on what I believe is a Hyper V Virtual Machine, running Windows Server 2008. We have a SonicWALL firewall, but the majority of the licensing on the firewall is no ...
0
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1answer
76 views

SpamAssassin filtering by Exim 4 with virtual user preferences

I would like to configure spam filtering with exim's built-in spam filter support in acl_check_data config section. The piping, exim header modification (to store result) works well. As well as ...
0
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1answer
13 views

How to findout where spam is coming from with EXIM?

I've tracked down the user which was sending out spam but I am wondering how can I determine where the script is that is doing it? I ran a scan looking for the mail() function but found nothing. ...
-1
votes
1answer
79 views

ColdFusion Server Infected and Sending Thousands of Spam Emails [duplicate]

We've been having a big problem with our Coldfusion 9 server sending spam emails in large amounts . . so i tried looking at the logs hoping i would find clues as to what the problem is and so: here ...
0
votes
1answer
24 views

Exchange 2010 SPAM filter

We have Exchange 2010 with the built in SPAM filter installed. Was wondering if there is a way to check what messages have been blocked. We have a customer trying to send an e-mail and it never ...
0
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1answer
126 views

Server hacked and used for sending spam [duplicate]

Hi I have CentOS server which running mail server. Last 2 days server started to send spam. After doing some research I couldn't solve the issue. Here is portion of statistics from Exim and the ...
0
votes
1answer
86 views

Sendmail's MTA, MDA and SMTP 550 User Unknown forwarded to postmaster

I have two boxes running sendmail and configured as: MTA accepting connections from the outside world (mta.xyz.com) MDA accepting connections from internal network and storing them in user mailboxes ...
0
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1answer
471 views

Zimbra uses other IP than assigned, causing HELO/Reverse-DNS mismatch

We've got a vServer running Zimbra and a web server, each of them having its own IP address. 1.1.1.11 - vServer, running: -- 1.1.1.12/mx1.ipsum.com - Zimbra mail server -- 1.1.1.13 - web server ...
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votes
1answer
42 views

Configure sendmail to reject emails without from addresses

My MTA is receiving lots of emails with no from address specified, for example: Sep 15 17:09:57 mta1 sm-mta[46864]: STARTTLS=server, relay=mx01.aquila-capital.de [83.236.242.254], ...
1
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2answers
259 views

Spamassassin filter systematically produces negative (ham) scores for spam messages

I have problem with lots of spam. My server setup is VPS with CentOS 6.5 and Dovecot+Postfix+Spamassassin. Here is source of one of the messages: Return-Path: <nancy_mitchell@tagbook.co.nz> ...
0
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1answer
34 views

Usefull to enter the same RBL's to Postfix and to spamassasin?

Does it make sense to enter the same RBL's in the postfix config under smtpd_recipient_restrictions and also in spamassasin? Would one not be enough? Thanks!
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1answer
46 views

Sending emails on behalf of our clients

We wan't to send emails on behalf of one our customer. Previously we were sending those emails using our email address. But last two times we got blacklisted in SORBS database (probably because of one ...
-6
votes
1answer
56 views

Automated blacklist checker [closed]

Has anyone used any of these services and if so, is there one you can recommend? Ideal target would be for an MSP so perhaps would like real time alerts if an IP shows up on blacklist for perhaps ...
-2
votes
1answer
24 views

spam email forwarding by server [closed]

Let's start with this scenario: We have a mailbox (i.e. in yahoo), every message is sent by this account, marked as spam by Gmail spam filter. (because the address or sender IP is blacklisted, ...
-1
votes
2answers
228 views

GMail detecting mail as spam [duplicate]

I've been trying for a long time to get our company's mail server send mail that will get accepted by the GMail spam filter. I have managed making it work for Yahoo Mail and Hotmail, sadly GMail is ...
2
votes
1answer
52 views

Training a spam filter based on Mailman moderator's actions?

I'm planning a Mailman server, and looking for a good way to enable list moderators train a spam filter (likely to be either spamassassin or dspam). Has anyone come up with a good way to run training ...
0
votes
1answer
32 views

Spamassasin: Check mailbox for spam

How can I have spamassasin check a mail folder for spam and move it into a different one. I've been getting a lot of spam recently and started implementing bayesian classifiers. I moved a bunch into ...
-1
votes
1answer
99 views

Can't figure out how to properly setup SPF record [duplicate]

I have a Django web app and I use Django's email backend to send out emails. I can't figure out why emails are ending up in spam folder. My domain host is GoDaddy so I added a TXT record ...
0
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1answer
84 views

Postfix acting as spam server. Looks like it's part of a botnet, spam messages being sent to customers [duplicate]

Let me first start out by saying I am no mail guru. If you need more info to help me just let me know. This week the mail server has been having all sorts of strange issues. It has been duplicating ...
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votes
2answers
693 views

Use postfix and spamassassin packages on CentOS 6 to reject SPAM - without custom users and scripts

Here is what I'm trying at my CentOS 6.5 Linux server: Installed postfix and spamassassin packages Configured Postfix - it works well (I omit details here) Added -x to the SPAMDOPTIONS in ...