As of Thurs. Mar 11, I've been getting the following message from the sa-update job for SpamAssassin
What I've read in posts from around 2014 is that the fix is to comment out this mirror as it is no longer updated?
If this is the case, then why did this error show up 4 days ago? Was there an update which enabled reading from the dead mirror?
Thanks in advance for the clarification.