Erick Calder:
> On Sep 25, 2009, at 2:30 PM, Wietse Venema wrote:
>
> > Erick Calder:
> >> On Sep 25, 2009, at 12:20 PM, Wietse Venema wrote:
> >>
> >>> Erick Calder:
> >>>
> >>>> this brings to mind: I've long used plussed addresses and love that
> >>>> feature but my only complaint is that many systems disallow the +
> >>>> sign
> >>>> in an e-mail address... is there a way to have a character bag work
> >>>> as
> >>>> the delimiter? i.e. any of a list of characters? (obviously a dot
> >>>> "."
> >>>> could also serve well as a delimiter since it's well accepted...
> >>>> but
> >>>> not as nice as + or /, or even -)
> >>>
> >>> It could be done. It would however be a pain to convert everything
> >>> from the current hard-coded assumption of a single delimiter, and
> >>> it would require an additional abstraction layer.
> >>>
> >>> However when you increase the number of delimiters, you can also
> >>> increase the number of table lookups.
> >>
> >> I don't think it would be so difficult. when the mail arrives, the
> >> local part of the address gets scanned for a set of characters (easy
> >> regex) and replaced with whatever postfix currently recognises as the
> >> delimiter. this way as far as postfix is concerned, there is still
> >> only 1 delimiter. of course, this assumes the user isn't going to
> >> segregate mail based on the delimiters (but I think that's fine)
> >
> > You can't replace the delimiter. That would break other people's
> > transit mail, among many things.
>
> I'm not sure I understand... perhaps we're speaking of 2 different
> things. what I mean is that when an e-mail first arrives at the
> server, before it gets processed, it could be rewritten to use the
> known delimiter i.e. a mail arriving for e/[email protected] could be
> rewritten as [email protected] (since + is what postfix uses to delimit)
On an end-node server, you can use a regexp map in one of the Postfix
address rewriting features that already exist.
On an infrastructure server, can't replace the delimiter. That
would break other people's mail.
Wietse
