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

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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
vote
1answer
30 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 ...
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 ...
1
vote
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 ...
0
votes
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 ...
0
votes
4answers
2k views

How can I block an email address in google apps?

I'm using google apps for email, and my primary accound is also the catch-all email address. Now, there are a number of email addresses that seem to attract a lot of spam - is there any way to ...
1
vote
1answer
4k views

Exchange 2003 mail non-delivery (NDR), spam activity? events 7002 & 7004

Windows Server 2003 Small Business Server SP2 Exchange Version 6.5 (Build 7638.2: Service Pack 2) This network has been neglected and has been having email problems for years and was on many ...
1
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3answers
277 views

Exchange 2007 ineffective spam filter

On a pretty clean 2007 setup, I'm seeing A LOT of mail with senders such as 0.0011a7f8@roman htyme@14009d3cb93848c 0-lz@14009d3cb93848c 0-5-1@home-4fd909062d 0-td@h109-187-48-125.dyn.bashtel.ru all ...
3
votes
8answers
2k views

Block spam by using geoip filter?

We are looking for a way to be able to block spam based on geographic location by filtering using geoip. context: we rarely have any email correspondence outside of the USA, so we would like to block ...
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, ...
45
votes
6answers
11k views

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?

This is a Canonical Question about Fighting Spam. Also related: How to stop people from using my domain to send spam? What are SPF records, and how do I configure them? There are ...
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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
votes
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
votes
1answer
40 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
votes
2answers
857 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 ...
1
vote
1answer
96 views

correct way to prevent SPF failures

I have a website on a hosted server whose mail users are using their ISPs SMTP to send mail. I have set their SPF record to look like this: v=spf1 mx a:comcast.net ip4:216.70.103.0/24 ...
0
votes
2answers
1k views

In Exim, is RBL spam rejected prior to being scanned by SpamAssassin?

I've recently been battling spam issues on our mail server. One account in particular was getting hammered with incoming spam. SpamAssassin's memory use is one of our concerns. What I've done is ...
0
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1answer
248 views

Debian Server with Postfix and Dovecot + Spam Management

I currently have an email account that receives TONS of spam because currently I have no filter setup. Is there any way of going through that spam that I am receiving and setup a filter off those ...
-4
votes
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 ...
0
votes
1answer
881 views

plesk 9 spamassassin server wide blacklist via cron?

we're running ubuntu 8.04 LTS and plesk 9.2 our simple task is to set up a periodic black list for spamassassin, e.g. using this script .. #!/bin/sh #! Script by AJR to update local spamassassin ...
0
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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
1answer
1k views

Prevent mail being marked as spam

This is a canonical question about avoiding outgoing mail being classified as spam. I'm wondering how to prevent my emails from my site being marked as spam? I'm using sendmail. I'm trying to ...
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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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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
votes
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 ...
0
votes
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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votes
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
votes
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 ...
0
votes
1answer
159 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 ...
1
vote
2answers
325 views

Linux command line based spam checker?

Does a command line based spam checker exist? We have created a mailbox at a 3rd party, and unfortunately decided on spam checking 'disabled' in the initial setup. There is no way to re-enable spam ...
2
votes
1answer
36 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
votes
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 ...
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. ...
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 ...
0
votes
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 ...
0
votes
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 ...
3
votes
4answers
436 views

Hosted Anti-Spam Service vs. Anti-Spam Appliance

We're currently using Content Catcher, a hosted spam solution. For less than what we pay them per year, we could purchase an anti-spam appliance to run in house. From a simple dollar perspective, it ...
0
votes
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 ...
5
votes
2answers
212 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 ...
0
votes
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: ...
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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 ...
5
votes
1answer
176 views

Disable Outlook Web Access Junk filtering in Exchange 2013

By default, Outlook Web Access (OWA) in Exchange 2013 seems to move suspected junk mail to the Junk Email folder. This is undesirable behavior in most of my environments because we have Barracuda Spam ...
0
votes
1answer
469 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
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 ...
3
votes
2answers
757 views

Is the 10-DNS-lookup limit in the SPF spec typically enforced?

My understanding is that the SPF spec specifies an email receiver shouldn't have to do more than 10 DNS lookups in order to gather all the allowed IPs for a sender. So if an SPF record has ...
0
votes
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. ...
0
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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
votes
1answer
125 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 ...