no text change, just tweak the HTML comment about mirrors-discuss@

to say that a web archive of that list would not be useful;
benno@ and sthen@ agree with the assessment

Author: ischwarze

mail.html

@@ -324,8 +324,10 @@ <h2 id="Mirrors">Mirror-related lists</h2>
 
 <dt><b>[email protected]</b>
 <dd>Discussion relating to OpenBSD mirrors.
-<!-- XXX need archive link -->
-
+<!-- Do not create a web archive of this list.
+     There is no benefit in looking up old posts,
+     so the only effect would be helping spammers
+     to collect mail addresses of mirror admins. -->
 </dl>
 
 <h2 id="Majordomo">Managing list membership via Majordomo</h2>