$={Accept}

Section 7.5.1

With the access_db feature, the possible acceptance strings from the access database (V8.10 and above)

$=B

FEATURE(bestmx_is_local)

With the bestmx_is_local feature, the domains to look up in bestmx in place of $=w

$={Canonify}

FEATURE(nocanonify)

With CANONIFY_DOMAIN or CANONIFY_DOMAIN_FILE, do canonify these domains (V8.10 and above)

$=E

Section 4.4.1

With EXPOSED_USER or EXPOSED_USER_FILE, the list of exposed users

$=G

Section 4.8.1

With GENERICS_DOMAIN or GENERICS_DOMAIN_FILE, list of domains to look up in generics table

$=L

Section 4.5.5

With LOCAL_USER or LOCAL_USER_FILE, the list of local users

$={LDAPRoute}

See this section

With LDAPROUTE_DOMAIN or LDAPROUTE_DOMAIN_FILE, route only LDAP hosts in this class

$={LDAPRouteEquiv}

See this section

With LDAPROUTE_EQUIVALENT or LDAPROUTE_EQUIVALENT_FILE, the host to treat as equivalent to $M for LDAP routing lookups (V8.12 and above)

$=M

Section 4.4.3

With MASQUERADE_DOMAIN or MASQUERADE_DOMAIN_FILE, the list of hosts to masquerade

$=N

Section 4.4.5

With MASQUERADE_EXCEPTION or MASQUERADE_EXCEPTION_FILE, the hosts excepted from masquerading

$=O

follows table

The list of non-username characters that can cause forwarding <, >, %, and possibly !)

$=P

follows table

The list of pseudo top-level domains (e.g., .uucp and .fax)

$={ResOk}

$={ResOk}

Mark a successful DNS lookup

$=R

Section 7.4.1.1

With RELAY_DOMAIN or RELAY_DOMAIN_FILE, the list of domains and hosts for which to relay

$={SpamTag}

Section 7.5.6

With the delay_checks feature, holds the strings SPAMFRIEND and SPAMHATER (V8.10 and above)

$={src}

follows table

List of rule sets to call for searching the access database map

$={tls}

$={tls}

Possible values for TLS policy in the access database map

$={TrustAuthMech}

Section 10.9.3

With TRUST_AUTH_MECH, the mechanisms used to allow relaying (V8.10 and above)

$=U

Section 4.6

With MAILER(uucp), the locally connected UUCP hosts

$=V

Section 4.6

With MAILER(uucp), the hosts connected to UUCP relay $V

$={VirtHost}

FEATURE(virtuser_entire_domain)

With VIRTUSER_DOMAIN or VIRTUSER_DOMAIN_FILE, the list of additional domains to look up in virtuser beyond $=w (V8.10 and above)

$=W

Section 4.6

With MAILER(uucp), the hosts connected to UUCP relay $W

$=X

Section 4.6

With MAILER(uucp), the hosts connected to UUCP relay $X

$=Y

Section 4.6

With MAILER(uucp), the locally connected smart UUCP hosts

$=Z

Section 4.6

With MAILER(uucp), the locally connected domainized UUCP hosts