On Tue, 22 Jun 2010 09:23:53 -0400
John Jetmore wrote:

> On Tue, Jun 22, 2010 at 5:51 AM, Dave Evans
> <[email protected]> wrote:
> > On Mon, Jun 21, 2010 at 02:38:37PM +0300, Nikita Koshikov wrote:
> >> Hello exim experts,
> >>
> >> I need exim to rewrite addresses like: <u...@domain*admin> to the form 
> >> <u...@domain>.
> >>
> >> Here is the rule I made for this:
> >>
> >> \N^(.*)\*admin(.*)?$\N          $1$2 S
> >>
> >> This is working on smtp-time MAIL FROM stage as I needed, but headers 
> >> doesn't touched by it.
> >> Adding one more rule without S flag didn't help and body headers From, 
> >> Sender, etc list unrewritten data.
> >>
> >> What's wrong and how can I fix this ?
> >
> > Well on my box, rewriting aside,
> >
> > # exim4 -brw '[email protected]*admin'
> > Syntax error in [email protected]*admin
> > Malformed address: *admin may not follow [email protected]
> >
> > Since [email protected]*admin isn't a valid address (on account of "*" not 
> > being
> > allowed in domain names), it looks to me like you're going to have a really
> > hard time making it work.
> 
> Dave's right, though it took me a few minutes to prove it to myself.
> I thought the "Malformed address" error was lingering from other
> checks, but it seems to be core to rewriting.  The address won't even
> be considered if it's invalid like that.  For instance, this logically
> behaves the way you want, rewriting both the SMTP and Message headers
> when tested against user*[email protected].
> 
> \N^(.*)\*admin(.*)?$\N          $1$2 Sh
> 
> However, when tested against [email protected]*admin, the SMTP-time
> rewrite works because it is defined as not caring about the syntax.
> However, it looks like exim's concept of what a domain is is so
> ingrained that it doesn't recognize [email protected]*admin as a valid
> email and therefore never even attempts to apply a rewrite rule to it.
>  I did prove to myself that the one rule/two rule thing is a red
> herring - it doesn't work because, in header rewrites, exim doesn't
> see it as an email address.
> 
> I don't really understand whether this is a bug or not.  My initial
> impression is that, in address rewriting, this is the correct behavior
> because it's not actually an address.  I wonder if any of the more
> generic rewriting functionality available in routers and transports
> might be of more use to you.

Thanks John, for time you spent checking and clearing this.
I will try try transport section, but it's not so handy as global rewrite for 
me.

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