text_combined: contentfilter hubbulinfonet postmasterhubbulinfonet message goldenimotbg considered unsolicited bulk email ube internal reference code message 3721004usz4e2crx4n8 message carried return address either genuine mail sender address faked email address abused third party case apologize undesired notification try minimize backscatter prominent cases ube infected mail less obvious cases ube balance losing genuine mail sending undesired backscatter sought collateral damage sides first upstream smtp client ip address 8451852 unknown according received trace message originated 8451852 22fdd7dbfb5414 unknown 8451852 returnpath messageid 2008080805162712814qmail22fdd7dbfb5414 subject internet explorer 7 delivery email stopped fri 08 aug 2008 132112 0300 considered unsolicited bulk email apparently