For the last 3 days I seem to be experiencing the same issue mentioned in https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6838, but with http://sa-update.secnap.net:
/etc/cron.daily/spamassassin: http: GET http://sa-update.secnap.net/1443355.tar.gz request failed: 404 Not Found: <html> <head><title>404 Not Found</title></head> <body bgcolor="white"> <center><h1>404 Not Found</h1></center> <hr><center>nginx/1.2.1</center> </body> </html> . Does anyone know if sa-update.secnap.net is unhappy?