Questions tagged [blacklist]

A blacklist is a basic access control mechanism that rejects elements included in the list.

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IPTables add an IP to IPSet list

How to correctly add an IP address to ipset from an iptables rule? Or isn't that possible at all? This rule doesn't work for me: -A INPUT -m recent --name IP_LIST --set Type of IP_LIST is hash:net ...
RIscRIpt's user avatar
1 vote
1 answer
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I cannot access my websites but everyone else can [closed]

About 4 days ago I could no longer view my websites from my IP address. I can see it through proxies and other IPs, everyone else sees it fine. I've contacted my host, they say I'm whitelisted and ...
Casey Hodge's user avatar
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Global Authority for Blacklisting IPs

I know that there are few common ways to block attacking IPs (such as deny in htaccess). Additional to that, we could get a huge list of IPs to block from misc sites such as : http://www.okean.com/...
Raheel Hasan's user avatar
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banning all *azenv.php request to my server

I am using apache 2.2 under centos6, and I'm recently having some kind of accesses that are unwanted, and that I wish to ban. For instance, I have this in my error_log: [Sun Apr 14 01:06:29 2013] [...
Sebas's user avatar
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Black Hole DNS on Windows DNS Server

I am looking at configuring our Windows DNS Servers for some type of DNS based blackhole operation. Ideally, we would be able to use feeds from MalwareDomains.com or the like. I was curious how one ...
John's user avatar
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My shared IP address is blacklisted. What's the quickest way of temporarily use another SMTP account with the same domain?

I manage a few shared hosting accounts for some customers in different hosting providers. One of the IPs of those accounts was blacklisted and my customer hasn't been able to send emails to Google ...
Bruno Silva's user avatar
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A record blacklisted but not the originating IP of affected messages - Gmail rejections

A customer's email is being rejected by gmail with the following codes: Action: failed Status: 5.7.0 Diagnostic-Code: smtp; 554 5.7.0 Reject, id=17756-61 - SPAM I see the A record for the domain, ...
zentech's user avatar
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In postfix how can I conditionally enforce check_sender_access

I am servicing 2 virtual domains: domain1.org , domain2.org. I want to enforce the following policy: If a client connects from an IP address in $mynetworks then I want to allow only mails for which ...
Paralife's user avatar
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Why are my emails going to spam folder?

My server ip is 78.46.138.249 and none of the blacklists I could find blacklist my domain. Nevertheless, many of my customers recieve their emails in their SPAM folder. I just created a live.com ...
srgb's user avatar
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multiple blacklist files shorewall

I have been blocking by ip with shorewall and the blacklist file. I have decided to block a few country entirely and the blacklist file is huge! So my question is this: Is it possible to have ...
Kyle Coots's user avatar
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Blacklist preventing DNS lookups?

To make a long story short, some users at another company who I have a lot of email correspondence with started having problems sending me email, they would get a message from the mailer daemon at ...
ultranaut's user avatar
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How should I manually add IP addresses to denyhosts?

I have a few IP addresses I want to add manually to denyhosts because they're huge sources of inbound spam. What's the best way to do this? Or should I not be messing with it? I want to manually ...
Andy Lester's user avatar
2 votes
1 answer
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at what level modprobe operates ? - linux

I have a machine with Ubuntu 12.04 64 bit, i have the need for blacklisting a module, i have blacklisted it in blacklist.conf but nothing happened; i have solved my problem passing modprobe.blacklist=&...
user1824407's user avatar
4 votes
2 answers
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Gmail.com detect mail as spam, but the server is not on any BlackList

I have an issue with Google. (GMail to be exact) About 1 month ago, we had a security breach, and mail was relayed through our servers. we got listed in almost ALL Black-Lists :( we fixed the ...
Tomer W's user avatar
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How do I implement IP-based export restrictions for my data stored on Amazon S3?

A little background: Corporate wants to make our downloads unavailable to U.S. export-restricted countries like North Korea, Iran, Syria, etc. Restriction by IP-block is considered good enough. (Yes, ...
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SMTP IP - Bad reputation, how do I work around?

I recently had a spamming incident and got listed on a blacklist. I have rectified the issue, removed from the blacklist, but my IP reputation is now classified as a high volume sender. What is the ...
Louis van Tonder's user avatar
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1 answer
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How to whitelist CloudFlare IP ranges within iptables rules (multiport)?

There seem to be many different ways to setup whitelist rules within iptables. What is the wisest way to whitelist the CloudFlare IP address ranges below via SSH? 204.93.240.0/24 (204.93.240.0 - 204....
Jesse Nickles's user avatar
4 votes
3 answers
8k views

Postfix restrict recipients

how can I configure postfix to allow sending to a certain (external) domain only? I'm already using check_recipient_access. Content of my /etc/postfix/recipients_restrictions: domain.com OK My (...
Eleven-Two's user avatar
11 votes
2 answers
23k views

Where to place Nginx IP blacklist config file?

I have an Nginx web server hosting two sites. I created a blockips.conf file to blacklist IP addresses that are constantly probing the server and included this file in the nginx.conf file. However ...
ProfessionalAmateur's user avatar
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2 answers
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Mail server not sending or receiving after removal from barracuda blacklist to white list [duplicate]

Possible Duplicate: mail loops back to myself | postfix Mail server not sending or receiving after removal from barracuda blacklist to white list. I've checked against black lists and the ip and ...
user137765's user avatar
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Will the Domain SMTP IP been blacklisted cause the Email Contains the Domain not deliver?

One of my domain is using https://www.cloudns.net/ as DNS server, they also offer email forward, so I need to setup my MX to 5 mailforward1.cloudns.net 10 mailforward2.cloudns.net to use the ...
Eric Yin's user avatar
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1 answer
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postfix global white/blacklist defined by pair

I have defined global whitelist in postfix using MYSQL with the following options: smtpd_recipient_restrictions = reject_invalid_hostname, check_client_access mysql:/etc/postfix/...
magiza83's user avatar
-6 votes
2 answers
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Bulk email prevent blocking

We are going to send huge bulk emails (It's an invitation to our site). I setup an instance on Amazon and installed zimbra on that along with phplist which is configured. DKIM and Domain keys are ...
Toqeer's user avatar
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Emails are regularly blacklisted due to being hosted on a shared (blacklisted) server. What can I do besides moving away from this shared server?

My client's emails are blacklisted because his account is on a shared server which gets blacklisted from time to time. The hoster wants him to move to an expensive dedicated server. What could I do ...
mcloud79's user avatar
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2 votes
1 answer
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Will using google apps emailhosting get rid of blacklisting caused by a shared server account?

a client`s email addresses are constantly blacklisted due to other users who share the same server. the hoster does want him to switch to his own dedicated server, so he gets his own ip. my question ...
mcloud79's user avatar
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2 answers
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How to add iptables ip blocklists to Plesk 10.4.4 (CentOS)?

I'm trying to figure out the best way to add IP blocklists to my Plesk 10.4.4 server (CentOS). It's a simple Virtual Server I recently acquired through my hosting company. I've used .htaccess files ...
jjwdesign's user avatar
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4 answers
6k views

squid blacklist solution

I've installed squid proxy server for a company and now they ask me to add blacklisting capabilities for squid. The most obvious thing that comes to mind is just to find a huge blacklist file on the ...
Alec T's user avatar
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2 votes
3 answers
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Email Server IP Address is Blacklisted

we have a Zimbra Mail server that was being used for 2 months now. the last week we faced a problem that the Public IP that was being used for our mail server started to be blacklisted and we couldn't ...
bogha's user avatar
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3 answers
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hotmail blacklist and rDNS questions

My company has recently purchased a VPS for email and webhosting. I am not an expert on email authentication but here is my story. After the VPS was purchased we started receiving bouncebacks with ...
DBIT's user avatar
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-1 votes
1 answer
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Dreamhost SSH activity now ip is blacklisted [closed]

I think that dreamhost blacklisted my ip address. I am giving this assumption due to the fact that I can not visit any of the hosted sites on the dreamhost server (namor). I also still have an ...
ThomasReggi's user avatar
0 votes
2 answers
213 views

Exchange 2003 external recipients causing blacklist issues

Over the past few days our Exchange 2003 Small Business Server has been building up outgoing mail. I found out that we have been blacklisted by numerous email lists. In our queues there is about 500,...
trg5030's user avatar
-2 votes
1 answer
217 views

Black Listing in outbound relayed e-mail

We send outgoing e-mail with one server relaying e-mail through another server. When e-mail is getting black-listed, is it the originating server that is being blacklisted or the relay?
John P's user avatar
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5 answers
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IP address blacklisting program

Are there any IP address blacklisting programs for Linux servers that allow the administrator to specify certain conditions that trigger an iptables blacklist on IP addresses scanning for ...
JMC's user avatar
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23 votes
6 answers
12k views

Use IPtables or null route for blacklisting about 1 million IP addresses?

I've come across a situation where a client needs to blacklist a set of just under 1 million individual IP addresses (no subnets), and network performance is a concern. While I would conjecture that ...
tylerl's user avatar
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PostFix Blacklist Configuration

I have setup up a basic email server using PostFix with Dovecot/IMAP. But i face some issue with the blacklist setup. below is my postfix main.cf smtpd_recipient_restrictions = check_sender_access ...
Harris's user avatar
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7 votes
5 answers
36k views

How do I get my server off the ivmSIP/24 blacklist?

I checked my server IP using this tool: http://www.mxtoolbox.com/SuperTool.aspx It's come up on the ivmSIP/24 list. What can I do to get my IP removed from this list? I have SPF records set to allow ...
cwd's user avatar
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7 votes
2 answers
9k views

Refuse to send email to specific recipients with Postfix

So, right now I am halfway through trying to setup an outgoing-mail blacklist, by way of smtpd_recipient_restrictions. The problem I am experiencing is that my test emails are being delivered when I ...
damianb's user avatar
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3 votes
1 answer
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How does IP blacklisting work on virtualized/shared hosting?

I have read that many blocks of IP addresses associated with Amazon EC2 have been blacklisted by various ISPs. Therefore, even if you never sent spam yourself, emails you send from an Amazon instance ...
Bob Perkins's user avatar
1 vote
1 answer
3k views

Exchange 2003 - Message delievery fails

I am having issues with sending mail to specifics domains. The bounce back message is: "Could not deliver the message in the time limit specified. Please retry or contact your administrator." ...
Tom's user avatar
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1 vote
2 answers
2k views

User agent blacklist recommended

Perishable Press publishes a managed user agent blacklist frequently, which blocks bad bots which htaccess directives. Article to be found here: http://perishablepress.com/press/2009/03/29/4g-...
Chrisissorry's user avatar
-1 votes
1 answer
446 views

Getting myself removed from the SORBS blacklist

I am now on the SORBS-SPAM blacklist, how can I get myself removed? This was an issue originally with another machine in our company which has since been cleaned up, but I think because I share the ...
helmuth strobel's user avatar
1 vote
3 answers
4k views

How to go about deploying batches of 5,000 emails?

I have been warned that sending too many emails too quickly can trigger an internet email blacklist/spam filter. I have a list of approximately 5,000 customers that I want to send a newsletter to. I ...
darkAsPitch's user avatar
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1 vote
5 answers
217 views

Mail server blacklists

Recently I've had a few clients on a server having issues with a blacklist. I've been googling for about an hour and am a little tired of it, but maybe someone here can help me. What do blacklists ...
b1kjsh's user avatar
  • 123
2 votes
4 answers
6k views

Where to find and how to block blacklisted IPs and proxies?

Good day everyone! I'm looking for a way to block incoming requests from blacklisted IPs and proxies (mostly anonymous) to my server. While it's quite obvious how to do it using Apache config the ...
WASD42's user avatar
  • 208
5 votes
2 answers
8k views

CBL This IP address is HELO'ing as "localhost.localdomain"

I am pretty lost here, my server somehow got into a blacklist. And I don't know why and how to solve it. Please take a look at the link below. CBL List - click here Anyone knows what is going on ...
Muazam's user avatar
  • 197
1 vote
1 answer
583 views

blacklisted - mdaemon misconfigured?

I would like to ask how to get off the blacklists such as gremlin.ru and rfc-ignorant.org abuse. http://multirbl.valli.org/lookup/79.129.24.240.html Is there anything I should setup in mdaemon server,...
user84373's user avatar
0 votes
1 answer
523 views

Null-route/blacklist certain websites on IPtables router [closed]

I've set up a home server to work as a router/NAT. This is done with IPtables forwarding rule. Now I'd like to block certain websites, like facebook. I thought I could just add 127.0.0.1 facebook.com ...
Markus Hedlund's user avatar
8 votes
2 answers
23k views

Blocking apache access via user agent string

I've got a scripter who is using a proxy to attack a website I'm serving. I've noticed that they tend to access the site via software with a certain common user agent string (i.e. http://www....
Kzqai's user avatar
  • 1,288
0 votes
2 answers
2k views

IP Blacklists and suspicious inbound and outbound traffic

I administer a web server and recently we had our IP banned (!) from our host after they received a notification e-mail for abuse. In particular our server is allegedly involved in spam attacks over ...
Pantelis Sopasakis's user avatar
1 vote
1 answer
543 views

Blacklisting Specific From and To with Postfix

I have a scenario where I need to blacklist emails from one email to one of our local emails. Is blocking this specific scenario possible in postfix? For example, emails from [email protected] ...
Deeksy's user avatar
  • 63