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Will You Add? - Seven Tips for Securing Your Organization's Network from Spam and Email Viruses
Duplicate what I give you in this article and you will be getting paychecks a lot sooner than if you ignore this article. What I am revealing here is what I do to make money online.First consider who it is you want to buy your product. This is what advertising is all about. Aim your advertising at a specific audience. If you have a clothing product, don't aim your advertising toward an audience of nudists! You must try to have your ad for your product reaching people who like to buy clothes, and if your clothes are high fashion then toward high fashion buyers.Having a website is not enough, you must have peopl
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm
Every day I get emails and I read message board and forum posts from what I call "naked and un-Attractive" marketers.What do I mean by "naked and un-attractive?"You've seen it...You receive an email or you read a message at a forum or message board.There is no friendly greeting (Hello Mary).There is no closing (Have a great day).There is no email signature with your name, phone, address, website, etc. (who are you?)There is no name in the email address showing in the "from" area of the email - just an email address that does not identify who they are.Now, I know some peop
In this article, I have listed the seven most effective spam fighting tips for organizations with in-house mail servers. These seven tips are proven techniques I have used for my customers, partners and associates who wish to tighten their perimeter (network) security.
1. Firewall:
A firewall is your first line of defense against hackers, crackers, and spammers. Without a firewall, your network is a disaster waiting to happen and could give any novice hacker free reign over your network. If your organization has multiple Internet users, this tool is essential for securing your network.
2. Block Port 25:
On your firewall, allow outbound traffic on TCP port 25 for all mail servers. Block traffic on outbound TCP port 25 for all other computers and servers. On the Internet, TCP port 25 is used for email traffic through SMTP (Simple Mail Transport Protocol). Blocking this port is a good security practice and prevents mass mailing worms and spam zombies from sending mail from your users’ computers.
3. Managed Email Filtering:
Consider using a managed filtering solution such as Postini, Brightmail, or SpamSoap. Managed Email Filtering services quarantine spam, viruses, and email threats before reaching the email servers on your network. In comparison to desktop filters and server appliances, managed filtering services provide superior perimeter (network) protection by preventing delivery of spam and viruses to your network and servers.
4. Check Relay Setting:
A mail server’s relay setting controls which computers and servers are able to send SMTP email on your organization’s behalf. Check your settings and limit the IP address range to email users on your local network. Some mail servers have settings to limit email relay through authentication. If authentication-based relay is available, setup and configure it too. NOTE: If the relay is not set properly, spammers will be able to send email from your mail server. This exploit is commonly known as an “Open Relay” or a “Spam Relay.” Use the Open Relay test at http://www.abuse.net/relay.htm to check if spammers can relay mail from your server.
5. Black Lists:
Setup your mail server(s) with a black list. A black list (black hole list) is a database or listing of known spam sources. Most modern email servers can be configured to query inbound email against online blacklists. Messages originating from these sources can then be blocked. I recommend configuring your email server with SpamHaus blacklist. Spamhaus.org is an excellent free service to use. Some other good blacklists are DBSL and SpamCop.
6. Reverse DNS:
Reverse DNS (rDNS) associates an IP Address with a Domain Name. Most mail servers, as an anti-spam feature, often use a reverse DNS lookup to compare an email address domain name with its IP address. If the IP address found from the rDNS lookup does not match the domain name, it is probably spam. If you haven’t done so, setup and configure reverse DNS records on your DNS server.
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm
What’s the biggest threat to your company? Competition? Regulation? Changing technology? Maybe you should put fear on your list. Fear is a small word that somehow touches our lives in a big way. Fear of danger is a survival mechanism. Fear of the change and the unknown is a destructive force that can consume workplaces and degrade the performance of our companies. As leaders, one of our most important jobs is to ensure that fear does not take root.The way to diminish fear in the workplace is direct and clear communication. This is often more easily said than done however. Even leaders with the best intentions wind up se
2. Block Port 25:
On your firewall, allow outbound traffic on TCP port 25 for all mail servers. Block traffic on outbound TCP port 25 for all other computers and servers. On the Internet, TCP port 25 is used for email traffic through SMTP (Simple Mail Transport Protocol). Blocking this port is a good security practice and prevents mass mailing worms and spam zombies from sending mail from your users’ computers.
3. Managed Email Filtering:
Consider using a managed filtering solution such as Postini, Brightmail, or SpamSoap. Managed Email Filtering services quarantine spam, viruses, and email threats before reaching the email servers on your network. In comparison to desktop filters and server appliances, managed filtering services provide superior perimeter (network) protection by preventing delivery of spam and viruses to your network and servers.
4. Check Relay Setting:
A mail server’s relay setting controls which computers and servers are able to send SMTP email on your organization’s behalf. Check your settings and limit the IP address range to email users on your local network. Some mail servers have settings to limit email relay through authentication. If authentication-based relay is available, setup and configure it too. NOTE: If the relay is not set properly, spammers will be able to send email from your mail server. This exploit is commonly known as an “Open Relay” or a “Spam Relay.” Use the Open Relay test at http://www.abuse.net/relay.htm to check if spammers can relay mail from your server.
5. Black Lists:
Setup your mail server(s) with a black list. A black list (black hole list) is a database or listing of known spam sources. Most modern email servers can be configured to query inbound email against online blacklists. Messages originating from these sources can then be blocked. I recommend configuring your email server with SpamHaus blacklist. Spamhaus.org is an excellent free service to use. Some other good blacklists are DBSL and SpamCop.
6. Reverse DNS:
Reverse DNS (rDNS) associates an IP Address with a Domain Name. Most mail servers, as an anti-spam feature, often use a reverse DNS lookup to compare an email address domain name with its IP address. If the IP address found from the rDNS lookup does not match the domain name, it is probably spam. If you haven’t done so, setup and configure reverse DNS records on your DNS server.
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm
So you decided to go to another shop. Instead of selling to you, he tells you all the things about the particular thing that you are interested. He let you feel and touch the product. He tells you his honest opinions on the products, the good and bad point of the product. He even tells you how one of his customer feels after buying the product. Instead of force selling you, he is trying his best to tell you all the information that he knows about the product and he will recommend the product to you if it helps you. You never feel that you are being pushed to buy the products.This is the kind of salesman that all affilia
4. Check Relay Setting:
A mail server’s relay setting controls which computers and servers are able to send SMTP email on your organization’s behalf. Check your settings and limit the IP address range to email users on your local network. Some mail servers have settings to limit email relay through authentication. If authentication-based relay is available, setup and configure it too. NOTE: If the relay is not set properly, spammers will be able to send email from your mail server. This exploit is commonly known as an “Open Relay” or a “Spam Relay.” Use the Open Relay test at http://www.abuse.net/relay.htm to check if spammers can relay mail from your server.
5. Black Lists:
Setup your mail server(s) with a black list. A black list (black hole list) is a database or listing of known spam sources. Most modern email servers can be configured to query inbound email against online blacklists. Messages originating from these sources can then be blocked. I recommend configuring your email server with SpamHaus blacklist. Spamhaus.org is an excellent free service to use. Some other good blacklists are DBSL and SpamCop.
6. Reverse DNS:
Reverse DNS (rDNS) associates an IP Address with a Domain Name. Most mail servers, as an anti-spam feature, often use a reverse DNS lookup to compare an email address domain name with its IP address. If the IP address found from the rDNS lookup does not match the domain name, it is probably spam. If you haven’t done so, setup and configure reverse DNS records on your DNS server.
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm
• Advertising is an excellent way to reach all of your clients. Free classified sites abound in the Internet, and you simply place your ad and watch them walk through the door. This strategy will work extremely well and you may find you get calls from clients from four, five, and six years ago whenever they are in need of your services. Clients appreciate knowing they can come back whenever they choose.• Ask for feedback and input. At some intervals within the working relationship, solicit feedback and input. Ask your clients how they feel about your business, employees, and services. Why not tell them you advertise on
5. Black Lists:
Setup your mail server(s) with a black list. A black list (black hole list) is a database or listing of known spam sources. Most modern email servers can be configured to query inbound email against online blacklists. Messages originating from these sources can then be blocked. I recommend configuring your email server with SpamHaus blacklist. Spamhaus.org is an excellent free service to use. Some other good blacklists are DBSL and SpamCop.
6. Reverse DNS:
Reverse DNS (rDNS) associates an IP Address with a Domain Name. Most mail servers, as an anti-spam feature, often use a reverse DNS lookup to compare an email address domain name with its IP address. If the IP address found from the rDNS lookup does not match the domain name, it is probably spam. If you haven’t done so, setup and configure reverse DNS records on your DNS server.
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm
Learn a lesson in direct mail fundraising from Cindy Sheehan.The bereaved mother who became a figurehead for the US anti-war movement abandoned her fight in May 2007 after growing disenchanted with the campaign.Here is an advocate and fundraiser who literally gave all that she had for her cause. After her son, Casey, was killed in the war in Iraq, she set up a protest camp outside the president's ranch in Crawford, Texas. All the money from the survivor's benefits paid for her son's death, and everything she earned from speaking and book fees, she spent on her cause. "I have
7. Anti-Virus Scan:
There are many tools that provide adequate anti-virus protection for desktops at the workplace. Most anti-virus software is good at detecting viral threats that proliferate email spam such as mass mailing worms, trojans, and directory harvesters. Large organizations might want to use enterprise anti-spam software with management and monitoring tools that will allow tracking of network virus outbreaks.
Recommended Links:
- http://www.spam-x.com [Postini service – managed filtering, 1 to 500 users]
- http://www.postini.com [Postini service – managed filtering, 500+ users]
- http://www.spamhaus.org [Blacklist]
- http://www.dbsl.org [Blacklist]
- http://www.spamcop.net [Blacklist]
- http://www.abuse.net/relay.htm [Open relay test]
- http://www.dnsreport.com [DNS report/open relay test]
- http://www.dnsstuff.com [Spam database lookup and open relay test]
- http://www.cnn.com/2004/TECH/ptech/02/17/spam.zombies.ap [Spam Zombie Article]
Email viruses and related threats delivered through spam have cost businesses billions of dollars in expenses and lost productivity. Each spam email sent or received from your domain costs your organization money and bandwidth. By implementing these seven tips, your organization can reduce spam and recover costs.
This article: © Copyright 2006 Todd Green and free for republishing.
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