Hi I have a strange problem. I have a HAProxy with 2 NICs NIC 1 VLAN 110 HAProxy have IP 10.40.152.10/28 NIC 2 VLAN 120 HAProxy have IP 10.40.252.10/28 is also the VLAN for Exchange server IP 10.40.252.11/28
I have a outlook client in VLAN 100 10.40.2.1/24 I have 2 cases for testing: Case 1: VLAN 100 <-> FW <-> (NIC 1VLAN 110) HAProxy ( NIC 2 Exchange VLAN 120) <-> Exchange Server Autodiscover.domain.com 10.40.152.10 Mail.doamin.com 10.40.152.10 Frontend: acl XMail hdr(host) -i mail. domain.com autodiscover. domain.com domain.com acl XMail_Autodiscover url_beg -i /Autodiscover use_backend HA_DAG_XMail_Autodiscover if XMail XMail_Autodiscover Backend HA_DAG_XMail_Autodiscover: server XMailDB01 XMailDB01.domain.com:443 maxconn 100 ssl ca-file /etc/haproxy/crt/mail_domain_com.pem Case 2: VLAN 100 <-> FW <-> VLAN 120 Exchange Server Autodiscover.domain.com 10.40.252.11 Mail.doamin.com 10.40.252.11 Case 1 gives HTTP Error 401 and 500 Case 2 works as it should Case 1 I have tried with fiddler to find out what goes on but have not found out why I get Error 401 and 500 I am capturing traffic from both NIC 1 and NIC 2 but I cannot relay find out what is going on and how to see what is the problem. Hope somebody have an idear how to fix this. Regards Henning
