[SOGo] is it possible to have sogo without /SOGo in the URL?

[pcbadger]

Hello, I've got sogo running on nginx although I had the same issue in apache.
I can edit the config so that webmail.mydomain.com takes you to the login
without /SOGo appearing, but if I do that and try to login I get "an unhandled
error occurred" 

Here's my config, it'll redirect you to /SOGo, so it works, just not the way I
want it to. 
 I'm beginning to suspect that the problem isn't down to nginx. Is this even
possible, has anyone else done it?


server {
       listen         80;
       server_name    webmail.mydomain.net;
       rewrite        ^ https://$server_name$request_uri? permanent;
}

server {
listen 443;
server_name webmail.mydomain.net;
root /usr/lib/GNUstep/SOGo/WebServerResources/;
ssl on;
    ssl_certificate /etc/nginx/ssl/server.crt;
    ssl_certificate_key /etc/nginx/ssl/server.key;

location  / {
rewrite ^ https://webmail.mydomain.net/SOGo/ permanent;
}

location ^~/SOGo {
#location ~ ^/(.*)$ {
#location  / {
#rewrite ^ https://webmail.mydomain.net/SOGo/ permanent;
#root SOGo;
proxy_pass http://127.0.0.1:20000;
#proxy_redirect http://127.0.0.1:20000 default;
# forward user's IP address
#proxy_set_header X-Real-IP $remote_addr;
#proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header x-webobjects-server-protocol HTTP/1.0;
proxy_set_header x-webobjects-remote-host 127.0.0.1;
proxy_set_header x-webobjects-server-name $server_name;
#proxy_set_header x-webobjects-server-url https://sogo.ias.u-psud.fr;
proxy_set_header x-webobjects-server-url $scheme://$host;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
client_max_body_size 50m;
client_body_buffer_size 128k;
break;
}

location /SOGo.woa/WebServerResources/ {
alias /usr/lib/GNUstep/SOGo/WebServerResources/;
allow all;
}

location /.woa/WebServerResources/ {
alias /usr/lib/GNUstep/SOGo/WebServerResources/;
allow all;
}


location /SOGo/WebServerResources/ {
alias /usr/lib/GNUstep/SOGo/WebServerResources/;
allow all;
}

location ^/SOGo/so/ControlPanel/Products/([^/]*)/Resources/(.*)$ {
alias /usr/lib/GNUstep/SOGo/$1.SOGo/Resources/$2;
}

location
^/SOGo/so/ControlPanel/Products/[^/]*UI/Resources/.*\.(jpg|png|gif|css|js)$
{
alias /usr/lib/GNUstep/SOGo/$1.SOGo/Resources/$2;
}
}
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