[Exim] message= in ACL "check_message"

Currently I have

check_message:
  require message = Header verification failed
          verify = header_syntax
  require message = Sender verification failed
          verify = header_sender
  accept

In case of syntax errors in "To: " lines the user gets the message
"Header verification failed" which is not very useful for him.

The log contains a far better message, for example

H=bronto.zrz.tu-berlin.de [130.149.2.93] F=<elsner@???> rejected after DATA: unmatched doublequote in local part: failing address in "to" header is: "elsner <elsner@???

How can I get the better message also to the user ?

Regards        _______________________________________________________________
Frank Elsner  /                         c/o  Technische Universitaet Berlin   |
 ____________/                               ZRZ, Sekr. E-N 50                |

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| SMTP : Elsner@???             Germany    ______________________|

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