On Mon, 28 Oct 2019, Christian K via Exim-users wrote:
Hi, I?m trying to sign all mails with DKIM from all subdomains of certain domains with the key of the ?main? dkim domain. Or in other words I want to find the dkim fallback domain to know which key I need to use for signing. Some examples for what domains I need to find the key for: foo.example.com -> example.com foo.bar.example.com -> example.com foo.example.co.uk -> example.co.uk foo.bar.example.co.uk -> example.co.uk I thought about using some regex substitution but with double domains it?s not that?s easy. Is there another way to achieve this?
The Public Suffix list https://publicsuffix.org/ may help you determine when you need "double domains". -- Andrew C. Aitchison Kendal, UK and...@aitchison.me.uk -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
