The 2.3.0-1 package is fine, but the 2.3.0-2 package has this failure: E: postfix_2.3.0.orig.tar.gz: md5sum check failed (abd6d53019e9ec944c66c2c8d106b87b [actual] vs. 72a714e0cc8a5fdbe770359ae965e09b [expected]). -- Please sync postfix_2.3.0-2 from sid https://launchpad.net/bugs/53949