MediaWiki:Config-install-subscribe-alreadypending/qqq

"mediawiki-announce" is the name of a mailing list and should not be translated.

A message displayed if the MediaWiki installer fails to subscribe the user to the mailing list because (1) the email address had already been used to subscribe, and (2) the user has not yet confirmed that prior request by responding to the confirmation email sent by the mailing list system.