[MR] Archived email removal procedure?

[Glynis Gwynedd]

Is there a procedure for removing emails from the Merry Rose and other
email lists on the Atlantian Server?  My Lord posted years ago to our
baronial list with his new address and phone number and the folks have
now (years after he's moved out) decided to go unlisted.

Is it possible to have such postings removed from the archives,
realizing that it takes up to a month or two to have Google and other
search engines remove them?

~Glynis Gwynedd