Scott is right. The Bat! is used by spammers. Here's the info about the I.P. it supposedly came from:
IP: 68.80.139.5
OrgName: Comcast Cable Communications Inc.
OrgID: CMCS
Address: 1800 Bishops Gate Blvd
City: Mt Laurel
StateProv: NJ
PostalCode: 08054
Country: US
NetRange: 68.80.0.0 - 68.87.255.255
CIDR: 68.80.0.0/13
NetName: JUMPSTART-2
NetHandle: NET-68-80-0-0-1
Parent: NET-68-0-0-0-0
NetType: Direct Allocation
NameServer: DNS.INFLOW.PA.BO.COMCAST.NET
NameServer: DNS.CMC.CO.DENVER.COMCAST.NET
Comment: ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
RegDate: 2002-01-28
Updated: 2006-01-26
RTechHandle: IC161-ARIN
RTechName: Comcast Cable Communications Inc
RTechPhone: 1-856-317-7200
RTechEmail:
CNIPEO-Ip-registration@cable.comcast.com
Dave