The access Database
The access database was introduced in
V8.9 sendmail, and improved upon in
V8.10. It provides a single, central database with rules to
accept, reject, and discard messages based on the sender
name, address, or IP address. It is enabled with the
For example, consider an access database with the following contents:
From:firstname.lastname@example.org OK From:spam.com REJECT
Here, mail from postmaster at the site spam.com is accepted, whereas mail from any other sender at that site is rejected.
Note that this example uses V8.10 syntax. Next, we will describe the access database using the old V8.9 syntax, and then describe the V8.10 and V8.12 updates.
 * Another feature,
recipients to also be rejected. Yet another,
FEATURE(delay_checks), allows even
finer tuning based on the desire of individual