Very often SPAMMERS take advantage of catch-all email setup on webservers. Every email no matter what the recipients email address is will be caught by the default email account. It is highly recommended not to use catch-all email accounts and to discard SPAM send to non-existing email addresses. SPAM will clog up your SMTP server and consum resources like bandwidth and disk space in mailboxes. In most mail servers and web control panels (like cPanel) the user or admin can decide what will happen to emails with no existing recipient on the server. Refuse to the let emails onto the server and to let the sender's mail server deal with it (option: ":fail:") or to accept these incoming messages but then to delete them right away (option: ":blackhole:".
Our conclusion:
:fail: is the preferred option over :blackhole:.
The :blackhole: option accepts everything sent to the domain mail server and then throws away the email going to a non-existing email account. This option uses the full amount of bandwidth, and also requires that the server be reading and writing messages to disk before they are deleted... multiply this by 1,000 messages a day or so and you can imagine the impact onto your server resources. Imagine your an email address from your domain (a non-existing one) has been spoofed to send out SPAM messages that even carry a virus. Most natural many of these messages will bounce back and hit your mail server. Your web server would have to deal with thousands of attachments at a time. Performance will go down - no matter what.
:fail: stops emails send to invalid recipients from entering the mail server in the first place..Exim will reject each message during the smtp handshake conversation - therefore the actual email message will never make it to your server. It is being refected from entering your system and the sender's email server has to deal with the stuck message. This option is also the better one for legitimate emails where the sender has actually mis-spelled the recipients email address. He would get a bounce message informing him so that the error can be corrected. Depending on your hardware - a server can handle many more :fails: than it can do :blackholes:.
This article can be published by anyone as long as a live back link to http://www.webhostingresourcekit.com is provided. (this note can be removed as long as a link from the author's resource box is provided)
Christoph Puetz is a successful small business owner (Net Services USA LLC) and international author.
Guides, Tutorials, and Articles for small businesses - http://www.webhostingresourcekit.com
Airbnb cleaning service Glenview ..It's no secret that the US economy has slowed down,... Read More
Before we start getting deep into the meat of this... Read More
Unless the filters on your computer are really good, you're... Read More
Marketers usually think of anti-spam tactics as 'how to prevent'... Read More
Spam. Those annoying, time-consuming emails that clog your Inbox and... Read More
Most of us have opened our email program and found,... Read More
Each day we all face the same challenge. Spam. It... Read More
I. BACKGROUNDThe CAN-SPAM Act of 2003 (Controlling the Assault of... Read More
Spam can be a lot more damaging than you might... Read More
When you receive an email telling you about a virus,... Read More
2004 was really a year when the whole subject of... Read More
It's a nightmare isn't it? You fire up your email... Read More
This review is taken DIRECTLY from a piece of "junk... Read More
If you are buried in SPAM then you're not alone.... Read More
You are familiar with the software applications that you run... Read More
Spam, as defined in the context of computers, the Internet... Read More
With the number of spam filtering solutions increasing each week... Read More
Over the past few years you've all become familiar with... Read More
Are you tired of spam stealing your time, your money,... Read More
A hearty welcome to all the spam fighting filters and... Read More
A Privacy Policy can be defined as the policy under... Read More
Junk e-mail or spam has become the scourge of the... Read More
Block Spam and Other Email Threats From Entering Your Gateway... Read More
You're not alone!Who hasn't surfed the web looking for information... Read More
Spam filters are responsible for deleting a high percentage of... Read More
efficient cleaning crew Highland Park ..Email is rapidly becoming the standard means of communication among... Read More
Block Spam and Other Email Threats From Entering Your Gateway... Read More
Effectively stopping spam over the long-term requires much more than... Read More
Microsoft scores one for the good guysScott Richter, the self-proclaimed... Read More
No doubt about it."Spam" (unsolicited commercial email) threatens to paralyze... Read More
2004 was really a year when the whole subject of... Read More
It's a nightmare isn't it? You fire up your email... Read More
Will other spammers take heed? Don't count on it.Jeremy Jaynes... Read More
Stop intrusive pop-up ads and regain control of your online... Read More
While the Federal Trade Commission is busy fighting over definitions... Read More
Junk mail works. Why does it work? How does it... Read More
You may have already received a do not spam list... Read More
Email is the quintessential business communication tool, so when it... Read More
Each day we all face the same challenge. Spam. It... Read More
Spam filters are responsible for deleting a high percentage of... Read More
While we all admit that unsolicited commercial email is a... Read More
My friends in the web hosting business have recently informed... Read More
Effectively stopping spam over the long-term requires much more than... Read More
Q: I am so sick of all the spam that... Read More
Why do so many people think I need to take... Read More
About a month ago I had the privilege of giving... Read More
As most small, medium and large businesses in this country... Read More
How would you feel if you found a link on... Read More
A hearty welcome to all the spam fighting filters and... Read More
Most of us have opened our email program and found,... Read More
Spam Blocking |