Receivedfor, noreceivedfor, receivedfrom, noreceivedfrom Channel Options

Envelope to address in Received: header
The  channel option instructs the MTA that if a message is addressed to just one envelope recipient, to include that envelope To: address in the Received: header it constructs. In such cases, the envelope To: address will be noted within the Received: header line via a clause of the form: for recipient The  channel option is the default. The  channel option instructs the MTA to construct Received: headers without including any envelope addressee information.

The  channel option instructs the MTA to include the original envelope From: address when constructing a Received: header for an incoming message if the MTA has changed the envelope From: address due to, for instance, certain sorts of mailing list expansions; in such cases the original envelope From: address will be noted in the Received: header line via comment of the form (original mail from original-envelope-from) The  channel option is the default. The  channel option instructs the MTA to construct Received: headers without including the original envelope From: address.

See also the ,   ,  , and   alias file named parameters, or in Unified Configuration, the alias options  ,  ,  , and  , which all override the channel settings on a per-alias (or per-mailing list) basis.

See also:
 * alias_noreceivedfor Option
 * Alias file named parameters
 * Headers channel options
 * Channel options
 * receivedstate Option