Marc.info is a crowdsourced online mailing list archive.
What you need to know about Marc.info
There are two circumstances under which the administrators will remove something from the archive: “[1.] A list admin asks us to remove a private list we’ve accidentally made public archives for, in which case, poof, the whole list is gone (after we are sufficiently sure it’s really the list admin requesting it, and not a forged mail, etc). [or 2.] A court orders us to remove a message.”