This morning I got the above mentioned change notice:
Network – Previously:
✓ IP address is not blacklisted by zen.spamhaus.org.
Network – Currently:
The IP address of this machine xx.xx.xx.xx is listed in the Spamhaus Block List (code [timeout]), which may prevent recipients from receiving your email. See http://www.spamhaus.org/query/ip/xx.xx.xx.xx.
After checking with Spamhaus my IP is not listed.
Do I need to worry?