[Exim] Weird bounce from abuse@register.com

Exim barfs if it finds a non printable character in an alias expansion?
ASCII 10 is a plain LF I think.

Says a lot about register.com though ...

    -srs

From: Mail Delivery System <Mailer-Daemon@???>
Date: Sat, 01 Jun 2002 22:52:43 -0400

[...]

  abuse@???
      Expansion of "${expand: ${escape: ${lookup mysql {select subject from
      mailrouting where local_part='${quote_mysql:$local_part}' and
      domain='${quote_mysql:$domain}'}{$value}}}}" in virtreply transport
      contains non-printing character 10