Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

how to check and protect sendmail server not to generate the spams?

Posted on 2008-10-26
2
303 Views
Last Modified: 2013-12-18
I am using sendmail server on RHEL5 and facing spam issues. My IP is blocked by CBL - Spamhaus.
Please suggest how can i check first of all that spams are not being generated from my sendmail server and secondly how can i configure spam filters not to alllow spam from and to this machine?
Please mention some links that can help me to implement spam filters on sendmail.

I am desperately waiting for this question's reply.

0
Comment
Question by:samengr
2 Comments
 
LVL 12

Accepted Solution

by:
hfraser earned 250 total points
ID: 22808913
How you react depends upon what kind of spam source you've been identified as . If you are flagged as a spam relay, other hosts on the Internet are sending mail to the Internet through your server to avoid being blocked. To correct it, see the sendmail document on anit-spam at:

http://www.sendmail.org/m4/anti_spam.html

If you are identified as the source of spam, you'll need to start with log files to see where the bulk of the mail is coming from. You will need to check the mail log files on the mail server. If you have a separate firewall, check its log files as well, since spam mail doesn't have to come from your mail server (it may be an infected PC). AV software and firewalls on the clients help with this.
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

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

Import PST to Exchange using Power Shell new-mailboximportrequest command, you can simply import the PST file into Exchange mailbox or archived. To know How to import PST into Exchange  2013 read the complete article.
This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Rules tab.:  To cr…

829 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