Alias header addition and alias header trim alias options

Alias options:  and
The  and    alias options are analogues of the legacy configuration &#x5b;HEADER_TRIM&#x5d; and &#x5b;HEADER_ADDITION&#x5d; alias file named parameters. The  alias option  may be used to add headers to or remove headers from posted  messages. The argument must be a full file specification for a header trimming option file; see  Header option files  for information on the format  of these files. is more specialized than ,  being used when there are merely headers to be added. may be used to specify a file of headers to be added to posted messages. The argument must be a full file specification for the file containing headers to be added.

In particular this facility can be used to add the standard mailing list headers defined in RFC 2369. For instance, a site domain.com that has set up a list named listname, that has a list owner address of listname-owner@domain.com and a list members administrator address of listname-request@domain.com,   and with certain list  information and archives available at an FTP site, might use a header  addition file along the lines of the following: List-Help: &#x3c;ftp://ftp.domain.com/pub/listname-help.txt&#x3e; (FTP), &#x3c;mailto:listname-owner@domain.com?subject=help&#x3e; (List Manager) List-Subscribe: &#x3c;mailto:listname-request@domain.com?subject=subscribe%20listname?body=subscribe%20listname&#x3e; List-Unsubscribe: &#x3c;mailto:listname-request@domain.com?subject=unsubscribe%20listname?body=unsubscribe%20listname&#x3e; List-Post: &#x3c;mailto:listname@domain.com&#x3e; List-Owner: &#x3c;mailto:listname-owner@domain.com?Subject=listname&#x3e; List-Archive: &#x3c;ftp://ftp.domain.com/pub/listname/archive/&#x3e;, &#x3c;mailto:listname-request@domain.com?subject="send%20listname%20archives?body=send%20/pub/listname/archive/&#x2a;&#x3e;

See also:
 * Alias options
 * Alias file named parameters
 * ldap_add_header MTA Option
 * alias_expiry Option
 * alias_importance Option
 * alias_precedence Option
 * alias_priority Option
 * alias_sensitivity Option