On 31/07/18 10:18, Mike Brudenell via Exim-users wrote:
Hi, Sebastian -
You didn't tell us the version of Exim you're running so I can't give you
the exact chapter/section names, but if you look in the *Specification* for
the chapter on DKIM, in the section called something like *Signing outgoing
messages* you'll find the description of dkim_sign_headers.
However I'd have thought that the defulat set of headers should be OK as
the *Specification* does explain:
When unspecified, the header names listed in RFC4871 will be used, whether
or not each header is present in the message. The default list is available
for the expansion in the macro "_DKIM_SIGN_HEADERS".
Thank you to everybody who answered so far. My Exim version is 4.90 and
I only use the following settings for DKIM in exim.conf:
dkim_domain = open-t.co.uk
dkim_selector = 20170820
dkim_private_key = /etc/exim/open-t.co.uk-private.pem
dkim_strict = true
I don't have any other Thunderbird plugin or anything else interfering
with DKIM settings anywhere - as long as I know. So I'm a bit puzzled by
the comments about over-signing. Is it possible that Exim does that by
default?
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