A Black-list is a database of known Internet addresses (IP's) used by spammers. Most of the Internet Service Providers (ISPs) and Bandwidth providers subscribe to these Blacklist databases in order to filter out spam sent across their network or to their subscribers. There are many internet organizations that specialize in this field. Many of these organizations publish Blacklists of mail servers that are known spammers. Blacklists are used by thousands of ISPs as part of their Spam defense. In a skeptical internet communication environment, a legitimate email system can also end up being blacklisted, resulting in mail delivery problems and immeasurable costs in lost business. According to a study released in August by Return Path, Inc.'s, Assurance Services division, seventeen per cent of permission-based email messages get incorrectly blocked or filtered by the top 12 Internet service providers. Even emails addressed to confirmed recipients may never reach their inbox.
Types of Blacklists
IP Blacklist IP Blacklist blocks specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the Blacklists. The IP Blacklist supports both IP addresses and subnet definitions. Addresses on the sender/recipient Blacklist can be defined by the address, simple wild carded mask or Perl-compatible regular expression. However, the problem with using an IP Blacklist is that it may cut off legitimate users trying to access site or blog or prevent them from sending email to users.
DNS Blacklist Domain Name Server (DNS) Black list is a list of IP addresses that are the source of unsolicited emails. By taking help of this list, system administrators can block unwanted domains. They refuse access to the server and prevent unwanted email messages. DNS Blacklists are usually maintained by anti-spam organizations or by individuals.
Spam Blacklist Spam Blacklists are lists of mail servers or open relays known to be used by spammers to deliver unwanted email. By placing these lists in their mail transport agent's rules system, system administrators can block spam transmitted from these sources.
Email Blacklist Email Black lists contain known mail servers and addresses used by spammers. With these lists in place, access to the server can be denied and unwanted email messages are discarded. However, your legitimate emails may also be blocked.
IP blockers & IP Blackholes IP Black Hole lists are large repositories of IP addresses that are known to be spamming. These repositories use various reporting mechanisms ranging from human reporting to spam-trap email boxes to determine who is sending spam, and when a spammer is identified by IP or IP block, the spammer is added to the Black Hole list. Other ISPs and email providers can configure their email servers to query the Black Hole list any time a new email comes in. When a new mail arrives at the server, prior to putting it into the recipient's mailbox, the server will examine the email, and trace its origin. Then it will ask the Black Hole list if this email came from a source that is a currently-know spammer. If the email does not originate from a source known to be spamming, it will be properly delivered into the recipient's email box. If the mail fails the test and is flagged as spam, the mail will not be delivered, but rather will be moved to a storage box for future examination by either the system administrator or the end-user. Real time Black hole List
RBL is a list of networks that are misused by spammers to send unsolicited emails. Anything listed in the RBL is unceremoniously bounced. The idea behind RBL is simple: block traffic from spammer IP addresses and thus prevent the traffic from reaching a destination on internet. The MAPS RBL (Realtime Blackhole List) is said to be the originator of Realtime Blackhole list. System administrators set rules on the mail server to use this list for rejecting incoming mail. The result promises less spam reaching recipients' inbox. However, legitimate users who unintentionally share a domain with spammers may have their emails blocked as well. Customers of ISPs that use RBLs may never know what they are missing.
How did you land in a Blacklist?
You have a legitimate business interest and have no intention of spamming but still you are blocked from further communication and blacklisted. All planning, investment is ruined in no time. How did you land in a Blacklist?
Reasons You harvested email addresses of your prospective from a vendor.There is no guarantee that the vendor list is of opt-in customers and that too of your customers. Never put in all your faith in such lists. You might have swapped list from your business associate, customer did not give you permission or for your newsletter. Even after customer opted-in for your service, you did not take the pain of confirming about it with them. You may be listed maliciously through one complaint of a client. You may have been listed maliciously by your competitor. Your IP falls in the range of addresses that are suspected of spamming and already blacklisted. If you using the same IP that the already blacklisted spammer is using, you may also end up being listed. If your subject line or sender's address does not give the impression of being legitimate. Your content is all crammed with nothing substantial to talk about. You email frequently without any consideration to, 'will the recipient like it'. You by default or intentionally emailed recipients who opted out of your service. Sometimes Blacklist organization presumes that your IP or company is a potential spam sender. They then add every IP address in that network to their Blacklists. They do this regardless of whether spam has been sent from those ISPs. Most Blacklist organizations do not care whether you are legitimate or not, they only consider how many complaints they have received. Sometime, only one complaint is enough to fall in the pit. The following ways may not guarantee you 100 per cent solution but you do not get reported often. Ensure your email server is not an open relay. Go in for doubt-opt in option. Do not use any spammer tricks Promptly handle unsubscribe requests. Use correct header data. Try mixing up your lists so that they contain addresses from different providers. Never send to lists with only one provider, if you are doing so, there are higher chances of getting blocked.
You can test your ip through this link.. http://www.dnsstuff.com/
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Blacklists
A Black-list is a database of known Internet addresses (IP's) used by spammers. Most of the Internet Service Providers (ISPs) and Bandwidth providers subscribe to these Blacklist databases in order to filter out spam sent across their network or to their subscribers. There are many internet organizations that specialize in this field.
Many of these organizations publish Blacklists of mail servers that are known spammers. Blacklists are used by thousands of ISPs as part of their Spam defense. In a skeptical internet communication environment, a legitimate email system can also end up being blacklisted, resulting in mail delivery problems and immeasurable costs in lost business. According to a study released in August by Return Path, Inc.'s, Assurance Services division, seventeen per cent of permission-based email messages get incorrectly blocked or filtered by the top 12 Internet service providers. Even emails addressed to confirmed recipients may never reach their inbox.
Types of Blacklists
IP Blacklist
IP Blacklist blocks specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the Blacklists. The IP Blacklist supports both IP addresses and subnet definitions. Addresses on the sender/recipient Blacklist can be defined by the address, simple wild carded mask or Perl-compatible regular expression. However, the problem with using an IP Blacklist is that it may cut off legitimate users trying to access site or blog or prevent them from sending email to users.
DNS Blacklist
Domain Name Server (DNS) Black list is a list of IP addresses that are the source of unsolicited emails. By taking help of this list, system administrators can block unwanted domains. They refuse access to the server and prevent unwanted email messages. DNS Blacklists are usually maintained by anti-spam organizations or by individuals.
Spam Blacklist
Spam Blacklists are lists of mail servers or open relays known to be used by spammers to deliver unwanted email. By placing these lists in their mail transport agent's rules system, system administrators can block spam transmitted from these sources.
Email Blacklist
Email Black lists contain known mail servers and addresses used by spammers. With these lists in place, access to the server can be denied and unwanted email messages are discarded. However, your legitimate emails may also be blocked.
IP blockers & IP Blackholes
IP Black Hole lists are large repositories of IP addresses that are known to be spamming. These repositories use various reporting mechanisms ranging from human reporting to spam-trap email boxes to determine who is sending spam, and when a spammer is identified by IP or IP block, the spammer is added to the Black Hole list. Other ISPs and email providers can configure their email servers to query the Black Hole list any time a new email comes in. When a new mail arrives at the server, prior to putting it into the recipient's mailbox, the server will examine the email, and trace its origin. Then it will ask the Black Hole list if this email came from a source that is a currently-know spammer. If the email does not originate from a source known to be spamming, it will be properly delivered into the recipient's email box. If the mail fails the test and is flagged as spam, the mail will not be delivered, but rather will be moved to a storage box for future examination by either the system administrator or the end-user.
Real time Black hole List
RBL is a list of networks that are misused by spammers to send unsolicited emails. Anything listed in the RBL is unceremoniously bounced. The idea behind RBL is simple: block traffic from spammer IP addresses and thus prevent the traffic from reaching a destination on internet. The MAPS RBL (Realtime Blackhole List) is said to be the originator of Realtime Blackhole list.
System administrators set rules on the mail server to use this list for rejecting incoming mail. The result promises less spam reaching recipients' inbox. However, legitimate users who unintentionally share a domain with spammers may have their emails blocked as well. Customers of ISPs that use RBLs may never know what they are missing.
How did you land in a Blacklist?
You have a legitimate business interest and have no intention of spamming but still you are blocked from further communication and blacklisted. All planning, investment is ruined in no time. How did you land in a Blacklist?
Reasons
You harvested email addresses of your prospective from a vendor.There is no guarantee that the vendor list is of opt-in customers and that too of your customers. Never put in all your faith in such lists.
You might have swapped list from your business associate, customer did not give you permission or for your newsletter.
Even after customer opted-in for your service, you did not take the pain of confirming about it with them.
You may be listed maliciously through one complaint of a client.
You may have been listed maliciously by your competitor.
Your IP falls in the range of addresses that are suspected of spamming and already blacklisted.
If you using the same IP that the already blacklisted spammer is using, you may also end up being listed.
If your subject line or sender's address does not give the impression of being legitimate.
Your content is all crammed with nothing substantial to talk about.
You email frequently without any consideration to, 'will the recipient like it'.
You by default or intentionally emailed recipients who opted out of your service.
Sometimes Blacklist organization presumes that your IP or company is a potential spam sender. They then add every IP address in that network to their Blacklists. They do this regardless of whether spam has been sent from those ISPs.
Most Blacklist organizations do not care whether you are legitimate or not, they only consider how many complaints they have received. Sometime, only one complaint is enough to fall in the pit. The following ways may not guarantee you 100 per cent solution but you do not get reported often.
Ensure your email server is not an open relay.
Go in for doubt-opt in option.
Do not use any spammer tricks
Promptly handle unsubscribe requests.
Use correct header data.
Try mixing up your lists so that they contain addresses from different providers. Never send to lists with only one provider, if you are doing so, there are higher chances of getting blocked.
You can test your ip through this link..
http://www.dnsstuff.com/
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