Folks here may or may not have remembered that I mentioned a while ago that the MacOS X mail client does not work with IMAP servers that do not use "/" as their separator. I coerced the FreeBSD port to build 2.0.15 with the new hierarchy patches. With the unix hierarchy separator directive turned on, I can confirm that the MacOS X mail client works correctly. For what that's worth. I sent mail to the port maintainer with my patch. It is easier than it might at first seem. Here's how: 1. change GNU_CONFIGURE=YES to USE_AUTOCONF=YES in the port makefile. 2. redo files/patch-ac so that it applies the same fix to aclocal.m4 instead of configure. 3. Now you can apply the diff from the 2.0.15 normal distribution and the 2.0.15-HIERARCHY-r2 one, discarding the diffs in 'configure' itself. When you build the port, configure will be regenerated by autoconf.