No, sorry. I'm wrong here - serves me right for trying to sort this out whilst 
still doing my day job....

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> On Behalf Of Alex Roman
> Sent: 03 July 2013 22:08
> To: [email protected]
> Subject: [exim] help with redirect router and filter after header rewrite
> 
> Hi,
> 
> I'm hoping a kind soul can help. I did read docs and made some steps,
> but am a bit stuck and am also new to Exim.
> 
> Exim is handling mail for mydomain.com. I managed to have emails sent to
> [email protected] delivered to [email protected]
> (yes I
> know it's prone to open relay). I'm using this global rewrite pattern
> under "begin rewrite" to do that:
> 
> \N^([^+]+)\+([^+]+)\[email protected]$\N   $1@$2   Ttcb
> 
> Works fine, messages are indeed delivered to [email protected].
> 
> But I want such emails to also be copied to [email protected], where
> "admin" is an alias for "root" in /etc/aliases. This is where I'm stuck.
> 
> I tried with a redirect router:
> 
> onbehalf:
>      debug_print = "R: copy onbehalf messages"
>      driver = redirect
>      data = #Exim filter\n\
>          if "$h_to:" contains "+onbehalf"\n\
>          then deliver [email protected]\n\
>          endif
>      allow_filter
>      #check_local_user
>      user = root
>      #unseen
> 
> According to the debug output, the filter in this router fails because
> the address has already been rewritten before the router is executed.
> Doesn't matter if it's the first router after "begin routers" or last.
> 
> Looking at the debug output, I see that Exim reports adding a useful
> X-rewrote-original-recipient header:
> 
>  >>Headers after rewriting and local additions:
> * To: [email protected]
> T To: [email protected]
>    Subject: test routing
> I Message-Id: <[email protected]>
> * X-rewrote-original-recipient:
> [email protected]
> F From: [email protected]
>    Date: Wed, 03 Jul 2013 20:33:13 +0200
> 
> I tried to change the redirect filter to the following:
> 
>      data = #Exim filter\n\
>          if "$h_X-rewrote-original-recipient:" contains "+onbehalf"\n\
>          then deliver [email protected]\n\
>          endif
> 
> But the debug output reports that X- header to be empty "":
> 
> --------> onbehalf router <--------
> local_part=SNIPPED domain=gmail.com
> R: reply to mydomain.com review invitation
> calling integru_invitereply router
> rda_interpret (string): #Exim filter\nif
> "$h_X-rewrote-original-recipient:" contains "+onbehalf"\nthen deliver
> [email protected]\nendif
> expanded: #Exim filter
> if "" contains "+onbehalf"
> then deliver [email protected]
> endif
> 
> Any clues would be greatly appreciated.
> 
> Alex.
> 
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