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Chapter 20, The M (Mail Delivery Agent) Configuration Command

Use rule sets to quarantine on page 442	The `#error` agent can now return a `$@ quarantine` (8.13)
FEATURE(local_lmtp) on page 625	`FEATURE(local_lmtp)` the `F=f` no longer set by default (8.13)
L= on page 745	`SMTP_MAILER_LL` and `RELAY_MAILER_LL` define `L=` for `smtp` and `relay` delivery agents (8.14)
F=B on page 768	`F=B` flag strips one leading backslash (8.13)
F=W on page 782	`F=W` ignores host status for delivery agent (8.13)

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