James Eborall schrieb:
> 
> Basically the mail system (and some others I believe) use a DN element
> for the email address to check that the cert used to sign matches the
> originator's address. If I make a CSR then the email address is there as
> 'emailaddress=...' which seems ok, however when I export it back to the
> CA and sign it the DN is rewritten during the signing process and loses
> the emailaddress element.

The emailaddress will be removed because of the recommendations for
S/MIME v3. S/MIME v2 compatible clients (e.g. Netscape) check the
subject alternative name too.

> It seems odd that they use this and ignore the
> subjectaltname but I'm rather new to PKI.

If you have clients that needs the emailaddress in the DN then you must
change the ra.conf and ca.conf. There is a switch DN_WITHOUT_EMAIL.
Simply set it to N or NO.

Best Regards, Michael
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