I have the FEATURE access_db in my sendmail.mc file and have recreated the sendmail.mc file and restarted sendmail and have rebuilt my /etc/mail/access.db file, but sendmail still seems to ignore the addresses in the access file/database.
When I send to an address that is listed in the access db, it still goes through without any problems. I have trimmed the access file down to just a list of addresses to block. The format of my access entries is:
ERROR:"550 Blocked by AU ITS"
Any ideas as to what else to check to get this working?