Re: [exim] exim rewrite envelope-from for one router only

On 21/03/2019 18:15, Tim Watts via Exim-users wrote:
> Do you think setting a magic X- header and picking that up in the
> dnslookup routers might be sane?

Perfectly possibly, with appropriate care.
Don't forget to clean any such headers in ACL
to avoid contamination from outside.
Has the disadvantage that the header is left on the message.

Another way is to use address_data.
--
Cheers,
Jeremy