Optin user carryover MTA option

Spamfilter MTA options:  (bitmask)
New in MS 6.2. The  MTA  option controls whether user spam/virus filter "opt in" requests will "carry over" when doing forwarding. That is, if the original recipient has opted-in but has then forwarded their e-mail to some other recipient, does that other recipient get the "opt in" effect?

Bit 0 (value 1): setting this bit means that "opt in" effect is disabled for all forwarded-to address(es). Bit 1 (value 2) controls the behavior for domain "opt in";  setting the bit disables the "opt in" effect for the forwarded-to address(es). Bit 2 (value 4) means that user "opt in" overrides any previous  user/domain "opt in" setting. Bit 3 (value 8) controls the behavior for aliases (typically lists) marked with the   alias option or named parameter &#x5b;OPTIN&#x5d;;  setting the bit disables the "opt in" effect for the forwarded-to address(es). The default is 0. Note that this option applies globally to all spam/virus filter packages; it does not come in numbered variants to apply only to one  spam/virus filter package or another.

See also:
 * ldap_optin1 MTA Option
 * ldap_optout1 MTA Option
 * ldap_domain_attr_optin1 MTA Option
 * alias_optin1 Option
 * alias_optout1 Option
 * Alias file named parameters
 * Direct LDAP attribute interpretation MTA options
 * Spamfilter MTA options