Hi Rob,
No need to do another lookup in the router, just add a set acl_m_spf = 1 under your condition, then you can check for this in your router.
Regards
Evan Booyens
Capetown
South Africa
-----Original Message-----
From: Rob Gunther [
mailto:redrob@gmail.com]
Sent: 15 March 2013 12:34
To: exim-users@???
Subject: [exim] headers_add only if condition
I am working on an SRS/SPF solution, I have created a router that does will re-write the from envelope only if the sending domain has an SPF entry.
I'm using this:
condition = ${if match{${lookup dnsdb{>\n; defer_never,txt=$domain}}}{\N(?m)^v=spf1\s\N} {1}{0}}
The condition is working, if the domain has no TXT record then it does nothing to the sender address.
The problem I am having is I am also adding a header to the router:
headers_add = "X-SRS: Sender address rewritten from <$sender_address> to <${quote_local_part:${local_part:$address_data}}@${domain:$address_data}>"
That header is being added to every message, even if the sender address was not altered. I thought it would only do that if the conditions(s) for the router were met but apparently not.
So 2 questions:
1) Can I fix this easily with some command?
2) I think I can do it by wrapping a condition into the headers_add option (based on some searching), that option seems complex to figure out - but more importantly would the router do the DNS check two times? Once for the condition on the router itself and again to figure out if the headers_add would be added?
Robert G.
