The | |
Prior to V8.9, relaying was allowed by default. Beginning with V8.9, relaying is turned off by default. In place of default relaying, V8.9 and later sendmail provide features, macros, and databases that set relay policy in a variety of ways. | |
The sendmail program will refuse a mail message
if the address specified as part of the SMTP MAIL FROM: has a domain
part that cannot be looked up, unless the
| |
The access database was introduced in V8.9 sendmail, and improved upon in later versions. It provides a single central database with rules to accept, reject, and discard messages based on the sender name and address. | |
The sendmail program now offers much finer control of addresses and rejections in the access database (V8.10 and later). | |
You can change the default rejection message (to augment it or to
clarify the reason for the rejection) using the
| |
Using the | |
Beginning with V8.12, sendmail offers hooks to access external programs via sockets, and a library to ... |
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