PKCS#3 representation of the DH prime. If the file does not exist, for
OpenSSL it is an error. For GnuTLS, Exim will attempt to create the file and
fill it with a generated DH prime. For OpenSSL, if the DH bit-count from
PKCS#3 representation of the DH prime. If the file does not exist, for
OpenSSL it is an error. For GnuTLS, Exim will attempt to create the file and
fill it with a generated DH prime. For OpenSSL, if the DH bit-count from