Package: dummy-mail-transfer-agent
Provides: mail-transport-agent
Conflicts: mail-transport-agent
Version: 1
Architecture: all
Maintainer: nobody <nobody@lists.ubuntu.com>
Installed-Size: 0
Depends:
Section: universe/mail
Priority: extra
Description: Tells the package management system /not/ to go looking
 for a Mail Transfer Agent such as exim or ssmtp.  This is useful if
 you plan to install a proper MTA later and don't want broken
 depenencies in the meantime.  It is also useful if you have installed
 by hand something that provides MTA functionality, and you don't want
 to bother making a .deb package out of it.