The patch should be applied to debian's courier 0.60.0-1. I can patch it without problems:
[buster:~/dev/ubuntu/src/courier/tmp] nxvl$ ls courier-0.60.0 courier_0.60.0-1.dsc courier_0.60.0.orig.tar.gz courier_0.60.0-1.diff.gz courier_0.60.0-1ubuntu1.debdiff [buster:~/dev/ubuntu/src/courier/tmp] nxvl$ patch -p0 < courier_0.60.0-1ubuntu1.debdiff patching file courier-0.60.0/debian/courier-mlm.init patching file courier-0.60.0/debian/courier-imap-ssl.init patching file courier-0.60.0/debian/courier-imap.init patching file courier-0.60.0/debian/courier-pop-ssl.init patching file courier-0.60.0/debian/courier-mta-ssl.postinst patching file courier-0.60.0/debian/courier-mta.postinst patching file courier-0.60.0/debian/courier-pop.init patching file courier-0.60.0/debian/courier-mta.init patching file courier-0.60.0/debian/courier-pop-ssl.postinst patching file courier-0.60.0/debian/courier-mta-ssl.init patching file courier-0.60.0/debian/courier-pcp.init patching file courier-0.60.0/debian/control patching file courier-0.60.0/debian/changelog patching file courier-0.60.0/debian/courier-ldap.init patching file courier-0.60.0/debian/courier-imap-ssl.postinst patching file courier-0.60.0/debian/po/cs.po patching file courier-0.60.0/debian/po/pt_BR.po patching file courier-0.60.0/debian/po/sv.po patching file courier-0.60.0/debian/po/es.po patching file courier-0.60.0/debian/watch -- please merge courier 0.60.0-1 from debian sid https://bugs.launchpad.net/bugs/254681 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs