greylist

English

Alternative forms

• graylist

Etymology

grey +‎ list

Noun

greylist (plural greylists)

1. (law) A list, resembling a blacklist, for less serious offences.
2. (Internet) A technique for blocking spam (junk e-mail) by temporarily rejecting mail from unknown senders. A legitimate sender is likely to try sending again after a delay.

Verb

greylist (third-person singular simple present greylists, present participle greylisting, simple past and past participle greylisted)

1. (transitive) To place on a greylist.