# Exchange 2016,outlook not updating inbox but connected

**URL:** <https://discourse.haproxy.org/t/exchange-2016-outlook-not-updating-inbox-but-connected/661>\
**Category:** Help!\
**Created:** [September 15, 2016, 1:36pm UTC](https://discourse.haproxy.org/t/exchange-2016-outlook-not-updating-inbox-but-connected/661 "2016-09-15T13:36:17Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Maurotb](https://avatars.discourse-cdn.com/v4/letter/m/5fc32e/32.png) [@Maurotb](https://discourse.haproxy.org/u/Maurotb)\
**Post date:** [September 15, 2016, 1:36pm UTC](https://discourse.haproxy.org/t/exchange-2016-outlook-not-updating-inbox-but-connected/661/1 "2016-09-15T13:36:17Z")

</div>

Hi,  
i have setup an exchange 2016 site (three exchange mbx), in front of site one squid3 as ssl offloading.  
I did try to focus squid on MBX1 first , then MBX2 and 3, all work as expected.  
Now I made a haproxy server to insert between squid and my mbx’s. Squid make ssl offload and focus on haproxy,  
this distribute load on 3 mbx.  
All works as expected, but sometimes (more often under load), outlook he says it is connected, but inbox  
not updating. I can send email, but my inbox do not update until i restart Outlook or i tell to squid to focus on one mbx instead haproxy.  
Request are made only with rpc over http, no mapi for now…  
My haproxy is 1.5.8, same problem with 1.6  
Any tips?  
Thanks

global  
log /dev/log local0 notice

```
    chroot /var/lib/haproxy
    stats socket /run/haproxy/admin.sock mode 660 level admin
    stats timeout 30s
    daemon

```

defaults  
log global  
mode http  
errorfile 400 /etc/haproxy/errors/400.http  
errorfile 403 /etc/haproxy/errors/403.http  
errorfile 408 /etc/haproxy/errors/408.http  
errorfile 500 /etc/haproxy/errors/500.http  
errorfile 502 /etc/haproxy/errors/502.http  
errorfile 503 /etc/haproxy/errors/503.http  
errorfile 504 /etc/haproxy/errors/504.http

```
    stats enable
    stats uri /stats
    stats realm Haproxy\ Statistics
    stats auth admin:XXXXXX
    maxconn 100000

option http-keep-alive
option prefer-last-server
no option httpclose
no option http-server-close
no option forceclose
no option http-tunnel
log global
option httplog
option forwardfor
balance leastconn
default-server inter 3s rise 2 fall 3
timeout client 600s
timeout http-request 10s
timeout connect 10s
timeout server 60s

```

############################################################################################################  
################################################### HTTP ###################################################  
############################################################################################################

frontend fe\_ex  
mode http  
bind 172.30.1.201:80

acl autodiscover url\_beg /Autodiscover  
acl ecp url\_beg /ecp  
acl ews url\_beg /EWS  
acl mapi url\_beg /mapi  
acl eas url\_beg /Microsoft-Server-ActiveSync  
acl oab url\_beg /OAB  
acl owa url\_beg /owa  
acl rpc url\_beg /rpc

use\_backend be\_ex\_autodiscover if autodiscover  
use\_backend be\_ex\_ecp if ecp  
use\_backend be\_ex\_ews if ews  
use\_backend be\_ex\_mapi if mapi  
use\_backend be\_ex\_eas if eas  
use\_backend be\_ex\_oab if oab  
use\_backend be\_ex\_owa if owa  
use\_backend be\_ex\_rpc if rpc  
default\_backend be\_ex

backend be\_ex\_autodiscover  
mode http  
balance roundrobin  
option httpchk GET /autodiscover/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_ecp  
mode http  
balance roundrobin  
option httpchk GET /ecp/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_ews  
mode http  
balance roundrobin  
option httpchk GET /ews/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_mapi  
mode http  
balance roundrobin  
option httpchk GET /mapi/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_eas  
mode http  
balance roundrobin  
option httpchk GET /microsoft-server-activesync/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_oab  
mode http  
balance roundrobin  
option httpchk GET /oab/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_owa  
mode http  
balance roundrobin  
option httpchk GET /owa/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex\_rpc  
mode http  
balance roundrobin  
option httpchk GET /rpc/healthcheck.htm  
option log-health-checks  
http-check expect status 200  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none

backend be\_ex  
mode http  
balance roundrobin  
server srv-mbx1 172.30.1.203:80 check inter 15s verify none  
server srv-mbx2 172.30.1.204:80 check inter 15s verify none  
server srv-mbx3 172.30.1.205:80 check inter 15s verify none