Channel configuration

In Unified Configuration, each MTA channel is configured as a named set of options under a   group. For instance, configuration of the   channel (the typical channel used to communicate with the Internet) could be along the lines of: msconfig&#x3e; show channel:tcp_local role.channel:tcp_local.official_host_name = tcp-daemon role.channel:tcp_local.identnonenumeric (novalue) role.channel:tcp_local.inner (novalue) role.channel:tcp_local.loopcheck (novalue) role.channel:tcp_local.maysaslserver (novalue) role.channel:tcp_local.maytlsserver (novalue) role.channel:tcp_local.defaultmx (novalue) role.channel:tcp_local.pool = SMTP_POOL role.channel:tcp_local.remotehost (novalue) role.channel:tcp_local.saslswitchchannel = tcp_auth role.channel:tcp_local.single_sys (novalue) role.channel:tcp_local.smtp (novalue) role.channel:tcp_local.switchchannel (novalue) In legacy configuration, each MTA channel was configured in the  file, with blank lines separating distinct channel definitions. For instance, a  channel definition in   might appear as (with a blank line before and after these lines): tcp_local smtp mx single_sys identnonenumeric pool SMTP_POOL \ switchchannel maysaslserver saslswitchchannel tcp_auth maytlsserver \ inner loopcheck remotehost tcp-daemon Note that in Unified Configuration, the  command may be used to edit channel definitions "as if" they were in the familiar, legacy configuration file form: msconfig&#x3e; edit channels Note that the channel-specific options -- those set in legacy configuration in channel option files, rather than as legacy configuration channel keywords -- in Unified Configuration are set under the   named group, e.g., msconfig&#x3e; set channel:tcp_local.options.ALLOW_ETRNS_PER_SESSION 2 Since channel-specific options are specific to the type of channel in question -- different types of channels tend to have completely different channel-specific options -- look under the discussions of the specific channel type to find out details of  what channel-specific options are available for a particular channel type, as channel-specific options do not appear under the general list of options.

See also:
 * Using defaults and nodefaults pseudo-channels to simplify configurations
 * Available channels
 * Channel options
 * Channels