Have even tried updating the front-end proxy and that makes no difference at all. Really stuck now as should be migrating mailbox tomorrow
What I don't understand is that the exported mailbox is not that big; it fact its mine so I know that 
Code:
[zimbra@zimbra01 ~]$ ls -l /download/import/pd.tgz
-rw-r--r-- 1 root root 16223685 Feb 16 04:59 /download/import/pd.tgz
[zimbra@zimbra01 ~]$ zmmailbox -z -m pd@domain.com postRestURL "//?fmt=tgz" /download/import/pd.tgz
ERROR: service.FAILURE (system failure: POST failed, status=413 Request Entity Too Large)
[zimbra@zimbra01 ~]$ zmprov gs `zmhostname` zimbraFileUploadMaxSize
# name zimbra01.domain.com
zimbraFileUploadMaxSize: 209715200
So how can 16.2Mb not fit into 200Mb ? If I check /opt/zimbra/conf/nginx/includes/nginx.conf.web.http(s) they do contain Code:
client_max_body_size 200m
Any ideas please