On 5 Mar 2019, at 0:53, azusa_tar...@yahoo.co.jp wrote:
Thank you for your reply!
Is there any plans to implement to "Expires" header as Postfix
feature?
It is defined in RFC-5536,
Which defines the format of *Netnews* (a.k.a. Usenet) messages, *NOT*
electronic mail messages. See
https://tools.ietf.org/html/rfc5536#section-1.2 for a definition of the
scope of RFC5536.
and sometimes others MTA has that feature.
Please name one.
Netnews is not mostly transported via SMTP or any other mail transport
protocol. The logical models for the handling and management of Netnews
and email are not very similar. The semantics of an "Expires" header for
email is undefined and its use in Netnews (where an integrated daemon
typically manages both message transport and a persistent message store)
does not map logically to MTAs like Postfix, Sendmail, or Exim which do
not manage a persistent message store.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole
