Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

WHM / Cpanel Spam

Posted on 2016-10-12
3
Medium Priority
?
48 Views
Last Modified: 2016-11-01
Hi,

Some sneaky bugger is bypassing my mx records and delivery spam direct to my hosting server.

My mx points to a spam filtering company and they then pass the good mail to me these spam emails are coming direct to the server.

My question is can I set whm to only allow incoming mail from certain IP addresses ?

Thank Simon
0
Comment
Question by:pc-buddy
  • 2
3 Comments
 
LVL 35

Accepted Solution

by:
Duncan Roe earned 2000 total points (awarded by participants)
ID: 41841898
Yes if there are only a few allowed incoming addresses you can use iptables Something like
iptables -A INPUT -p tcp -s <good_address_1> --syn --dport 25 -J ACCEPT
iptables -A INPUT -p tcp -s <good_address_2> --syn --dport 25 -J ACCEPT
# (more of these)
iptables -A INPUT -p tcp --syn --dport 25 -J DROP

Open in new window

Run these rules on the server system(s). Specify adresses numerically (aaa.bbb.ccc.ddd). See man iptables, man iptables-extensions. Install the iptables package if you don't already have it.
0
 

Author Comment

by:pc-buddy
ID: 41841906
Awesome will try it, thanks Duncan
0
 
LVL 35

Expert Comment

by:Duncan Roe
ID: 41868074
The author last posted that he would try the solution.
He has not posted since, so it seems entirely reasonable to assume that it worked for him.
0

Featured Post

[Webinar On Demand] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you've heard about htaccess and it sounds like it does what you want, but you're not sure how it works... well, you're in the right place. Read on. Some Basics #1. It's a file and its filename is .htaccess (yes, with a dot in the front). #…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.
Suggested Courses
Course of the Month10 days, 3 hours left to enroll

571 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question