Spamfilter channel options

The MTA supports use of up to eight external spam/virus filter packages. For each such spam/virus filter package, there is a set of channel options selecting which channel(s) invoke the spam/virus filter package. For conciseness, listed here are solely the options for spam/virus filter package 1; but note that there are analogous channel options     for   =  as well.

See also the Spamfilter MTA options for configuration of the location and operation of the spam/virus filter package interfaces. Note that "opt in" to spam/virus filter package processing may also be selected on a per-user,  per-domain, or per-alias basis.

As of Messaging Server 7.0.5,   also supports invoking spam/virus filter packages; in particular, this can be used to perform post-delivery removal of spam/virus-infected messages from the Message Store. For this purpose,  is told a source channel "as which" to execute, and then any    or      for that channel will be invoked by.

See also:
 * destinationspamfilter1 Option
 * destinationspamfilter1optin Option
 * disabledestinationspamfilter1 Option
 * disablesourcespamfilter1 Option
 * sourcespamfilter1 Option
 * sourcespamfilter1optin Option
 * Spamfilter MTA options
 * ldap_optin1 MTA Option
 * ldap_optout1 MTA Option
 * ldap_source_optin1 MTA Option
 * ldap_domain_attr_optin1 MTA Option
 * alias_optin1 Option
 * alias_optout1 Option
 * imexpire invoking spamfilter packages
 * Functional group list of channel options
 * Spam and virus filtering