Haproxy setup help
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ok might have made some progress. installed a syslog and changed HAproxxy to log everything. When I try to connect the phone from external this is what syslog shows me as error:
Nov 24 22:40:44 192.168.3.251 ffww syslog notice haproxy[96712] Proxy Iredmail_https_ipvANY started.
Nov 24 22:40:52 192.168.3.251 ffww syslog info haproxy[96902] X.X.X.X:59323 [24/Nov/2016:22:40:52.070] HTTPS-merged Iredmail_https_ipvANY/mailer 1/0/111 1866 – 1/1/0/0/0 0/0
Nov 24 22:40:57 192.168.3.251 ffww syslog err haproxy[96902] X.X.X.X:23380 [24/Nov/2016:22:40:52.089] HTTPS-merged HTTPS-merged/ <nosrv>-1/-1/5002 0 SC 0/0/0/0/0 0/0
Nov 24 22:41:07 192.168.3.251 ffww syslog err haproxy[96902] X.X.X.X:40317 [24/Nov/2016:22:41:07.378] HTTPS-merged HTTPS-merged/ <nosrv>-1/-1/0 0 SC 0/0/0/0/0 0/0
Nov 24 22:41:25 192.168.3.251 ffww syslog info haproxy[96902] X.X.X.X:10799 [24/Nov/2016:22:41:25.175] HTTPS-merged Iredmail_https_ipvANY/mailer 1/0/132 1866 – 1/1/0/0/0 0/0Hope this helps
Rajbps</nosrv></nosrv>
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The "<nosrv>" looks like it might be a problem. It usually means the request does not match the acl's used for the use_backend action. Can you share the haproxy.cfg file from bottom of settings tab?</nosrv>
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will send you in a pm in a few min
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Could you try configuring the Iredmail backend as the default backend?
Also afaik a SNIvalue will never contain a 'path' like /owa it might contain a portnumber though.. So add a acl for both mailer.example.com and mailer.example.com:443 also try capturingnthe phone requests in a wireshark capture, the ssl connection packetshould show if/what sni value is send.
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Cheers for that by changing the default to of the Iredmail frontend, the backend bit from default to Iredmail did the trick. Thanks so much for all the help. I am going to change the owa part now and see what happens
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Just send you a new pm with the new change. Would you suggest doing the same with the other front ends?
Cheers,
Rajbps
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Ok so with the 'default backend' set it works, that confirms the problem was with the requests not matching the acl checks and because of that ending up at <nosrv>.
A frontend as configured in haproxy.cfg can effectively only have 1 "default_backend" so no you should not set the default on each 'shared frontend', as available in the webgui. So best would be to figure out why the acl was not matched..
If the phones dont send SNI information another workaround could be to 'decrypt/offload' ssl traffic on haproxy preferably with a wildcard certificate to allow haproxy to read the host header in the http request to choose a backend.. Or ofcourse keep it like it is now.. with only the the frontend thats for the phones having a default.</nosrv>
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Hi PiBa,
Sorry to post on this ols post. You assisted me before and hopefully you can assist again. I have an iphone and its been working fine. I added an android today and it does not register with exchange. I done a bit of digging and believe that the issue is haproxy. I can see the following in syslog. Message: x.x.x.x:20655 [13/Jun/2017:20:49:43.498] HTTPS-merged majesty_https_ipvANY/ <nosrv>-1/-1/0 0 SC 1/0/0/0/0 0/0
I will send you the haproxy.cfg file in a pm if that`s ok. Could you assist please.Cheers,
Rajbps</nosrv> -
The iphone is also using this majesty backend? The backend got picked, but the <nosrv>seems to tell no server could be connected to in that backend. That also seems to match the description for your SC status code (see below). The backend server shows as 'up' on the stats page? Can you tcpdump/wireshark the traffic while the android attempts to connect?
SC The server or an equipment between it and haproxy explicitly refused
the TCP connection (the proxy received a TCP RST or an ICMP message
in return). Under some circumstances, it can also be the network
stack telling the proxy that the server is unreachable (eg: no route,
or no ARP response on local network).</nosrv> -
The iphone has worked with no issues and still work. Its connecting the the right backend as owa. Just the android seems to try to connect to majesty with is not the exchange server :-(
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Ok 'default_backend majesty' is probably the reason it ends up there.. could be that none of the acl's matched..
The current acl might not always match.:
acl OWA req.ssl_sni -i mail.mydomian.com
Could you add also a:
acl OWA req.ssl_sni -i mail.mydomian.com:443So including the port? that might solve something..
p.s. it seems you have to many 'default_backend' configured anyhow. but if the acl's pick up the traffic you shouldnt end up on majesty. (when requesting mail.mydomian.com)