[Exim] Exim generated bounce-addr rewrite

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Hi,



I need to rewrite empty sender (exim generated bounce) to a valid email address.

This cannot be done in address rewriting because this valid email address is

generated from data in bounce message?



So a message exim receives via SMTP:



mail from: a@domain1

rcpt to: b@domain2

data

X-Errors-To:    postmaster@domain1

....



causes bounce because mail to domain2 cannot be delivered. And this

bounce is generated by my exim I am configuring.



normal bounce format:

mail from: <>

rcpt to: a@domain1

data

X-Failed-Recipients: b@domain2



What I need to archieve is modified bounce addressing @ envelope-level:

mail from: error@domain2

rcpt to: postmaster@domain1 (<= $h_X-Errors-To)



What I have tried to do is a redirect-router:

bounce_route:

driver = redirect

senders = :

domains = !+local_domains

address_data = error@${sg{$h_X-Failed-Recipients:}{\N^(.*)\@(.*?)$\N}{\$2}}

data = $localpart@$domain



normal-case router has:

  errors_to = $h_Errors-To      (<= which should redirect errors to address domain1-admin wanted)

I tried searching help/faq but didn't find anything (lack of good keyworks?), and didn't find any way of

testing this bounce_route -router so it is very hard for trial and error.



Exim is v4.10..



Thanks in advance..



Best regards, Jori Hämäläinen



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