Merge branch 'mdw/addrcheck'

* mdw/addrcheck:
  addrcheck: Optionally invoke userv service to decide address validity.
  qmail-valid-addresses: Cope with missing files.
  qmail-smtpd: Validation of recipient mailbox names.

diff --combined debian/control
index 0d1534b,9bd4434..ac47580
--- 1/debian/control
--- 2/debian/control
+++ b/debian/control
@@@ -1,5 -1,5 +1,5 @@@
  Source: qmail
 -Maintainer: Mark Wooding <mdw@nsict.org>
 +Maintainer: Mark Wooding <mdw@distorted.org.uk>
  Section: mail
  Priority: extra
  Standards-Version: 2.1.2.2
@@@ -8,7 -8,8 +8,8 @@@ Package: qmai
  Architecture: any
  Section: mail
  Priority: extra
- Depends: ${shlibs:Depends}, netbase, procmail
+ Depends: ${shlibs:Depends}, netbase, procmail, 
+  python (>= 2.3.5), python-cdb, nsict-cdb
  Provides: mail-transport-agent
  Conflicts: mail-transport-agent
  Suggests: pine | mail-reader