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Questions tagged [spam]

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

Spam can refer to:

  • Junk e-mail
  • Unwanted posts on a website
  • Unwanted comments on a post on a website
  • A large number of posts designed to crash a system rather than provide useful content

For our canonical Q&A about how to prevent email you send from being flagged as spam, see How to send emails and avoid them being classified as spam?.

1396 questions
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Configuring postfix to fight spam, 2012 edition

EDIT: This question was poorly asked, later I found another question which answers what i wanted to know: Spam prevention tips for Postfix I'm running a small (20 users, 30 mailman-lists) server with postfix. I think it's configured fine, more or…
Fabian Zeindl
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How do I set up a troll raid defense system?

I have a website or perhaps an IRC server or whatever. The server keeps a list of all unique visitors (IP addresses). I have a panic button that, when activated, denies access to all visitors that are not already in the list. This is to stop…
Ansis Māliņš
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Track spammer Exim

hello i have a exim server , and have a lot of spam last 24 hours , i watch exim_mainlog and see this 1SDcCZ-0005DX-JQ-H mailnull 47 12 1333115355 0 -helo_name eicghqfebwyn -host_address 186.106.221.159.3741 -host_name…
mbarrerar
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every email marked as SPAM or not even delivered?

I am having a very serious problem! I registered the domain http://codepigeon.com a while back (2 months) and have dev. an app to easily make changes to ones source code across multiple webpages or websites. But the app is not yet public. So there…
Jimbo Mombasa
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Spamassassin AWL: From: address is in the auto white-list

I am not sure what does this flag means in Spamassassin score checking? My test returned "1 of 5" and mentioned this: 1.0 AWL AWL: From: address is in the auto white-list
adrianTNT
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What is the aim of this email? Is this a ping or sping or what?

I asked this on Webmasters, since it was related to me being webmaster, but it got closed as off-topic. Let's see if I get lucky here. I received this spam in my catch-all. As a webmaster of the domain it was sent to, I am really curious what the…
mplungjan
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SpamAssassin: Message is 20% to 30% HTML

SpamAssassin is flagging my e-mails as HTML_20_30 - 'Message is 20% to 30% HTML' What exactly does this message mean and how can I make it go away?
Jim G.
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Long established Postfix / Dovecot environ had to be rebuilt, became an open relay; How do I know fore sure it's fixed, and, if not, fix it fast?

Because it's bad form here to ask multiple questions in ONE entry, I'll be asking about specific Postfix and Dovecot entries, however this nightmare has been going on since about January 19 and it's now Feb 10! In the original situation, it took…
Richard T
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How to fix spam listing of IP due to SMTP HELO banner

Spamhaus has listed my IP a few times for an apparent problem. They are indicating: A device using is infected with malware and is emitting spam. is making SMTP connections with HELO values that indicate a problem. The HELOs…
Dennis Thrysøe
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How do I remove my domain from spam lists after abused credential incident?

Recently the email account of one of my users was hijacked to send a lot of spam and phishing mails. Once I realized the problem I did solve it, but only after my domain was marked as spammer by many servers. Is there a way to unlist my domain?
Engel
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Is it possible to scan local drive folder for SPAM Mails?

I want to check a postfix mailbox folder directly on the Server. The server OS is Debian. Is this possible?
Marcus
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How is it possible for spammers to keep pestering me with FAKE domains when all e-mail sending providers have these insane obstacles to go through?

I keep getting e-mails to my Gmail account from made-up domains such as: @mtixusu9shbyusyr6.org.uk @mpqyriexqpvramtkn.org.uk And so on... (Yes, I checked some of them and they are not actually registered.) Please note that I already know the messy…
L. Marron
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Mail Server IP address is getting blocked by Spamhause

I have use my mail server public IP address for years. But now it is blocked by spamhause. But no special no illegal activities happened on my network. We have very good monitoring solutions and no any suspicious activity is detected. We have…
serverAdmin123
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Ubuntu 16.04 Postfix works, but email goes to SPAM

Hello i follow this guide to install Postfix https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-18-04 and i added SPF, dmarc and DKIM I follow this guide for dkim…
lablnet
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Abuse report for spamming...abuse report

Few weeks ago, i activated on my server on automatic abuse report mail when someone try to brute force my SSH, i did it because i got an average of 3000 spamming IP each weeks. But today, my ISP send me a mail saying that someone is reporting me for…
redheness
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