I have now made progress in narrowing down the cause further.=0A=0AI have= noticed that it is a regression between FreeBSD 9.x -> FreeBSD 10.x. For= this reason, I will move any updates on this to the FreeBSD bug tracker,= rather than the OpenLDAP one, as the bug is platform specific.=0A=0AFutu= re news will be posted here: https://bugs.freebsd.org/bugzilla/show_bug.c= gi?id=3D197004=0A=0AThank you for your time,=0A=0A-Jonathan=0A=0AJanuary = 22 2015 2:25 PM, freebsd(a)jonathanprice.org wrote: =0A> Sorry for the slow= response, but I have made some progress with the issue.=0A> =0A> (as an = aside, I installed a build from LTB, and unfortunately it does not=0A> co= ntain this overlay)=0A> =0A> I have detailed my findings (including some = trawling through the source)=0A> over on the FreeBSD bug tracker, as I su= spect it could well be a platform=0A> related issue. Nonetheless, it migh= t be worth reading:=0A> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id= =3D197004=0A> =0A> January 14 2015 4:31 PM, "Quanah Gibson-Mount" <quanah= @zimbra.com> wrote:=0A> =0A>> --On Wednesday, January 14, 2015 11:00 AM += 0000 freebsd(a)jonathanprice.org=0A&gt;&gt; wrote:=0A>> =0A>>> Hi,=0A>>> =0A>>> I= tried 2.4.39 under FreeBSD and still had the same issue.=0A>>> =0A>>> I = have also tried the packages for both CentOS 7 and Debian Wheezy, but=0A>= entOS.=0A>>> When I used this installation, it worked successfully.=0A>>>= =0A>>> I ran slapd -V on the zimbra installation, and it's 2.4.39. Howev= er,=0A>>> based on it still not working on 2.4.39 on FreeBSD it appears t= o have=0A>>> narrowed it down to two reasons: - An issue with the packagi= ng under=0A>>> FreeBSD=0A>>> - The functionality is specific to Zimbra=0A= nual=0A>>> compilation on CentOS, including the SHA2 overlay. If this wor= ks, then it=0A>>> would confirm it to be a FreeBSD issue, and if it doesn= 't work that would=0A>>> strongly suggest that Zimbra has modified someth= ing.=0A>> =0A>> You could simply grab the LTB project builds. I'm pretty = sure they build=0A>> out the contrib modules.=0A>> =0A>> In any case, I a= lready noted that Zimbra doesn't patch anything in OpenLDAP=0A>> that wou= ld affect this area.=0A>> =0A>> --Quanah=0A>> =0A>> --=0A>> =0A>> Quanah = Gibson-Mount=0A>> Platform Architect=0A>> Zimbra, Inc. =0A>> ____________= ___________________=0A>> =0A>> Zimbra :: the leader in open source messag= ing and collaboration