When email messages sent to an email address receive a hard bounce with the message "Previously marked as spam complaint", you might notice that the email addresses do not appear in Invalid Accounts in BBIS or Blacklisted Email Addresses in CRM. The constituent records in CRM are also not updated to reflect the hard bounce either.
We are currently evaluating this issue for a fix in a future service pack.
Steps to Duplicate
1) Send an email job out from BBIS 2) After the send completes, check the Bounces section of the Email Report 3) Find records that received the Bounce message, "Previously marked as spam complaint" 4) Notice that the email address doesn't get added to Invalid Address in BBIS 5) Go into CRM and search for constituent records with email addresses that returned the "Previously marked as spam complaint" message. 6) Notice that the constituent record isn't updated to reflect the hard bounce. 7) Go to Administration > Email Services > Blacklisted Email Addresses and notice that the email addresses were not added there.