Support automatic fetching of S/MIME certificates over DNS
Hi, Evolution does not use gpgsm for S/MIME and has its own certificate management functionality, so this is the right place to implement this. S/MIME certificates can be discovered using DNS in the SMIMEA resource record. Even while DNSSEC is not supported by the GLib networking stack, this functionality would still be useful as S/MIME certificates are typically signed by trusted CAs anyway.
People generally don't use S/MIME keyservers, so this is really one of the only and one of the most practical ways to get an S/MIME certificate for someone without having to send/receive an unencrypted email first.
Thanks for your consideration!