[exim] SMTP Data termination in test mode

Does anyone know how to correctly terminate the data when testing with "exim -bh"? When using CRLF-dot-CRLF, the data terminates
correctly, but Exim includes the extra dot-CRLF to the canonicalized body when calculating the DKIM body hash, which then leads to
an incorrect hash value. When using Ctrl-D or Ctrl-C, the connection is dropped without calculating the DKIM, of course. Is there
any other way?