also black-list, black list, "list of persons who have incurred suspicion," 1610s, from black (adj.), here indicative of disgrace, censure, punishment (attested from 1590s, in black book) + [..]

list of individuals or organizations suspected of disloyalty or wrongdoing.

A Blacklist is a list of IP addresses that are known to send unsolicited and/or unwanted emails. ISPs and enterprises use blacklists to identify and filter illegitimate mail streams. Blacklisting can also occur for specific sending domains in addition to sending IPs. You may have found in your Block List or Bounce list that your sending IP address [..]

a list of people who are out of favor put on a blacklist so as to banish or cause to be boycotted; "many books were blacklisted by the Nazis" A blacklist (or black list) is a [..]

Definition verb

(blak´list) (n.) In Internet terminology, a generic name for a list of e-mail addresses or IP addresses that are originating with known spammers. Individuals and enterprises can use blacklists to filt [..]

A list containing email addresses or IP addresses of suspected spammers. Blacklists are sometimes used to reject incoming mail at the server level before the email reaches the recipient.

See restricted list.

A list of “bad” email addresses (spam) or inappropriate Web sites.

A blacklist is a list or register of entities who, for one reason or another, are being denied a particular privilege, service, mobility, access or recognition.

The practice employed by Internet Service Providers of blocking an IP address or series of IP addresses to prevent the receipt of e-mail messages from a server that is suspected of tran [..]

Blacklist refers to a register or list that contains the name of persons who for some reason are denied a particular privilege, recognition, service or access. Usually, a person whose name is there in [..]

A list used for exclusion. Usually used by software to create a list of email addresses to block, sites to not allow traffic to, and computers to not permit access. In Net Nanny you can create a blacklist of sites you would not like your users to be able to see.

Blacklists help keep the Internet clear of unsolicited email by giving mail providers a list of offending email senders (spam) that they can automatically block and keep away from inboxes.

A Blacklist is used by some services to collect sources of spam. Email traffic then can be filtered against a blacklist to remove spam. Blacklists can be created using domain or IP lists. Blacklisting [..]

(n) a list of people who are out of favor(v) put on a blacklist so as to banish or cause to be boycotted

Regarding spam, blacklists are lists of known spammers, their IP addresses, and/or their ISP (Internet Service Provider). Using this information, spam filters can block all messages coming from known [..]

Application blacklisting, sometimes just referred to as blacklisting, is a network administration practice used to prevent the execution of undesirable programs. Such programs include not only those known to contain security threats or vulnerabilities but also those that are deemed inappropriate within a given organization. Blacklisting is the meth [..]

A blacklist is a list of entities that are considered to be unacceptable/untrustworthy and are denied access or privileges.

In IT and WordPress security a blacklist refers to a list of non trusted sources or objects. For example if you would like to block a number of IP address from accessing your website you can use the blacklist approach

When performing input validation, the set of items that — if matched — result in the input being considered invalid. If no invalid items are found, the result is valid.

A list of IP addresses, email addresses, or domains that an Internet service provider suspects to be the source of spam. The ISP blocks incoming email from these addresses or domains.

For BoxTrapper, a list of rejected email senders. BoxTrapper automatically deletes any messages from senders who are on the blacklist.For cPHulk, a list of rejected IP addresses. cPHulk never allows logins to your server from IP addresses on the blacklist.For Exim, a list of IP addresses from which the system drops SMTP connections unconditionally. [..]

A blacklist, in the context of computing, is a list of of domains or email addresses for which delivery of emails is blocked. When this occurs, a user is unable to send a message to the intended recip [..]

A list developed by anyone receiving email, or processing email on its way to the recipient, or interested third-parties, that includes domains or IP addresses of any emailers suspected of sending spam. Many companies use blacklists to reject inbound email, either at the server level or before it reaches the recipient’s in-box. Also Blocklist and B [..]

A list of domains or apps that a buyer does not want to buy ad space on.brand

A list of IP addresses and/or domains that are not allowed access into particular networks.  By being blacklisted, the sender’s emails may bounce and/or get rejected C Click URL

A list developed by email service providers, email servers, or internet service providers consisting of domains, IP addresses, or even individual addresses that have been reported or suspected of send [..]

The blacklist includes first and last name, bank details and other information about customers / debtors whose creditworthiness or solvency stood out in a negative way.

A blacklist is a list of websites or terms which have been identified as inappropriate by a filter.