It is important that you know everything there is to know about email blacklist check if you send emails regularly, and particularly so if you send emails in bulk. One way of doing this is getting answers to email blacklist check FAQs or frequently asked questions.

What is an email blacklist? An email blacklist, also known as a DNSBL or domain name server-based blacklist is a list of IP addresses that have been referenced by a DNS server software to check if email senders are known spammers. Today's mail servers check DNSBLs to find out if the domain name of the email sender is associated with spammers and to check if the links contained in the sent email are spam links.

Where do you do an email blacklist check? Some of the most commonly used DNSBLs are access.redhawk.org, b.barracudacentral.org, blackholes.five-ten-sg.com, block.dnsbl.sorbs.net, dialups.mail-abuse.org, dnsbl.sorbs.net, intruders.docs.uu.se, misc.dnsbl.sorbs.net, no-more-funn.moensted.dk, proxy.bl.gweep.ca, rbl.schulte.org, relays.bl.gweep.ca, smtp.dnsbl.sorbs.net, spamguard.leadmon.net, xbl.spamhaus.org, zombie.dnsbl.sorbs.net, and bl.tiopan.com, among hundreds of others. There are several tools that will tell you the blacklist you have been listed on.

How does an email blacklist work? Email blacklists are created by Internet users. Once users reject, filter spam, or junk emails, the email ID is scrutinized by servers and if the server deduces that the email is junk mail, then the IP address goes to a blacklist automatically. Some email blacklists come pre-installed with spam software and the software updates the list automatically. These blacklists work through the DNS or Domain Name System that are used by the email server. Whenever you receive an email, the server will do an email blacklist check. Email blacklists create local lists or distributed lists. The blacklists could be temporary whereby IP addresses are blocked for a few hours, permanent whereby one has to apply for delisting, and comprehensive whereby the blacklisting is done on the IP address and those addresses surrounding it.

How do you do an email blacklist check? You could do an email blacklist check using an email blacklist monitor. Most such monitors are free of charge. The monitor will check your IP address for delisting (every 4 hours in most cases) and you will get a notification via email whenever there is a blacklisting.

Why should one do an email blacklist check? Doing an email blacklist check is important because you will be able to take corrective action once you have been blacklisted. Taking action is one of the most effective ways of delisting since most blacklists will notice the change and remove you from the blacklist automatically. You should however note that you will need to apply for delisting with some blacklists. An email blacklist check will increase your emails' delivery rate. There are several other methods of increasing the delivery rate of your emails. You could do MX lookup, DNS lookup, and use such network tools as trace route, which helps you determine the route taken by your IP packets to reach the destination, and tracert, which is a network protocol that is used on the local area networks or Internet to provide bidirectional interactive text-oriented communications facility through virtual terminal connections.



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