Whoops, I was barking up the wrong tree. "hexdump -c " showed that the sieve files were not identical, and that the failing one contained an additional "\r" character.
#sed -e 's/\r//' test.sieve > test2.sieve allowed this to work. Please close. ** Changed in: exim4 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to exim4 in Ubuntu. https://bugs.launchpad.net/bugs/766731 Title: sieve not working with i386 build -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs