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Spam Blocker Information |
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Blackhole or Fail - Which One Is Better For Your Mail Server?
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
MORE RESOURCES: Swedish Spam Blocker Truecaller Takes on AI Voice Clones Bloomberg.com How To Stop Spam Calls for Good Clark Howard Consumer Reports tells us how to finally stop robocalls 6abc Philadelphia Smart SMS Spam Blockers Trend Hunter Hackers Bypassing Outlook Spam Filter to Deliver Weaponized ISO Files CybersecurityNews How to block spam calls and messages on Android and iPhone Inquirer Technology My Pixel blocks tons of spam calls, but can any other Android phone do the same? - Android Authority How to Identify and Avoid Apple ID Phishing Scams Reader's Digest How to Block Annoying Emails for Good Reader's Digest Can YouMail Really Put an End to Robocalls? Clark Howard How to stop the never-ending stream of spam emails Kurt the CyberGuy How to screen calls on an iPhone The Verge How to stop nuisance calls Good Housekeeping Make it STOP: Does replying to spam texts from politicians really block them? University of Colorado Boulder My Pixel absolutely crushes the iPhone in this one key area Android Authority Block SMS Text Spam with Nomorobo tidbits.com What Is Spam Made of, Anyway? Reader's Digest Phone apps that filter spam for Hong Kong users found to expose their data South China Morning Post How to Block Spam Calls on Android Tech Advisor How to block spam calls on Android India Today Comcast Introduces New Advanced Spam Blocker Feature for Xfinity Voice Customers Comcast Corporation How to block a phone number on your Android phone Android Authority How to permanently block spam calls and SMS on Jio The Indian Express How to Block Spam Calls on Android & iPhone Devices | Reviews by Wirecutter The New York Times Truecaller introduces Auto-Block Spam feature for iPhone: Know what it is and how it works India Today How to stop spam texts for good Komando.com Best cordless phones which.co.uk Truecaller will automatically decline spam calls for you with this feature: Who can use it and how to use? Hindustan Times Does Unsubscribing from Emails Work—and Is It Safe to Do? Reader's Digest Robokiller: Spam Call Blocker subscription price to jump 225 percent on July 20 O'Grady's PowerPage Best call blocking devices for landlines Kurt the CyberGuy Tech Tips: Block your spam calls and SMS on Jio; Here’s how financialexpress.com Xfinity Mobile Collaborates with Hiya to Thwart Mobile Robocalls Comcast Corporation Vi launches AI-based solution to identify, block spam SMS for customers The New Indian Express How to stop spam calls on your Android phone Android Police Spam blocker proves costly The Florida Bar Android lets users filter overseas SMSes to spam folder, block sideloading while on call The Straits Times Spam filter: DNS blacklist Nixspam ceases operation heise online Privacy risk from apps used for filtering spam calls The Standard 英文虎報 What is a spam filter? TechTarget Robocall Blocker Review Consumer Reports How to Keep Spam Away From Your Smartphone Samsung Newsroom Kim Komando: The best ways to block scam calls New York Post How to block spam calls and stop them once and for all Business Insider |
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