Update... got spammed again as I was posting the last story...
Same content, and at least the same address for the first two parts of the IP address. I remember the 61.181, but I don't recall if 5.118 matches the address from yesterday. Regardless... I'll be blocking this one...
Search results for: 18.104.22.168
OrgName: Asia Pacific Network Information Centre
Address: PO Box 2131
NetRange: 22.214.171.124 - 126.96.36.199
NetType: Allocated to APNIC
Comment: This IP address range is not registered in the ARIN database.
Comment: For details, refer to the APNIC Whois Database via
Comment: WHOIS.APNIC.NET or http://www.apnic.net/apnic-bin/whois2.pl
Comment: ** IMPORTANT NOTE: APNIC is the Regional Internet Registry
Comment: for the Asia Pacific region. APNIC does not operate networks
Comment: using this IP address range and is not able to investigate
Comment: spam or abuse reports relating to these addresses. For more
Comment: help, refer to http://www.apnic.net/info/faq/abuse
OrgTechName: APNIC Whois Contact
OrgTechPhone: +61 7 3858 3100