Re: Sender header?

["Bjørn Mork" <bmork@dod.no>]

Stainless Steel Rat <ratinox@peorth.gweep.net> writes:

> But if login @ fqdn is not an address at all then something in the system
> is not configured correctly.

Where do you find this requirement?

Blindly creating sender fields based on this assumption violates
RFC2822. If present, the sender field must contain a single
mailbox. "login @ fqdn" does not qualify in many cases, and there is
nothing requiring it should (even if there were: Would it justify
violating RFC2822?)


   If the originator of the message can be indicated
   by a single mailbox and the author and transmitter are identical, the
   "Sender:" field SHOULD NOT be used.

I do see that this text can be interpreted in different ways, but
let's interpret it in a way that makes sense. When are the author and
transmitter identical? Most of us write mail wearing different hats and
using different machines to transmit it, maybe even different logins
on the same machine. But the important difference is always which hat
we are wearing. In my opionion, the author and transmitter are always
identical when they represent the same person. If I write a message
with the bmork@dod.no hat on, then that's the hat I am using when
transmitting it too. Where I am transmitting it from doesn't change
this. 

With this interpretation, including a sender field would be illegal in
all cases where a single author transmits his own mail. A sender field
should only be added when transmitting mail on behalf of others, or
when the mail has multiple authors. 



Bjørn