SharePoint 2013 Site Mailboxes behind UAG

Question

Hello,
I tried to connect to my SharePoint 2013 site mailbox through UAG. From internal access, it works fine.
From external access, I was connected to the SharePoint Site. I clicked on the Mailbox link I have a OWA form based authentication. After wrote my credential, I had an error page "404 - File or Directory not found". I clicked on back button an
reauthenticate myself, I received a message "Logon error. Access to the page was made from an unauthorized URL.
If you were confronted to a same error, how did you corrected this one ?
Thank you.
Philippe
philgood031

Answer 1

Hi Luo,
Thank you for your answer. Below replies to yours :
1. Yes we have activated the form based authentication on UAG. We used based authentication on Outlook Web Access. Connections to Webmail works fine.
2. We used external URL for Webmail, but for Office Web Apps reasons we have added another internal DNS zone with the same domain name than external domain. We have added Hosts Record.
3. On local network, we can have access to Site Mailbox in Outlook, I have never tested this from external network. I have added "send as" rights for the user on the shared mailbox and the full rights on the shared mailbox.
Summary :
Our client have installed SharePoint 2013, Office Web Apps 2013 and Exchange 2013 SP1. He wants to have an external access to Office documents and also to Site Mailboxes on SharePoint. Office Web Apps works fine inside and outside. Site Mailboxes works fine
Inside but not outside. They used a domain name like "internal.cotonso.com" and the external domain name is "contoso.com". They called us to resolved this problem. The only Warning informations we received from the Event Viewer with
sixteen different event id with number 67
The description for Event ID 67 from source Microsoft Forefront UAG cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the
local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
2xx.yyy.zzz.156
charel
webmail2013
1
OWA2013
ExchangePub2013
/owa/[email protected]/plt1.ashx?cId=3292ea71-4116-4f59-8957-7e3444de3883&msg=SessionDataError&tg=&MDB=abe00dfc-d231-4a90-aede-4a9b67b68c2e&sdCoId=3292ea71-4116-4f59-8957-7e3444de3883_1397656540883&fe=null&be=null&cbe=null&cver=15.0.847.32&rand=1397656541490&rpo=0&off=0&pal=0&rfe=0&PLT=uES,4,uEE,4,fS,0,dLS,0,dLE,0,cS,0,cE,0,reqS,2,resS,2,resE,5,domL,12,pE,631,now,632&lbv=15.0.847.32&icv=15.0.847.32&iacr=15.0.847.32&lcver=15.0.847.32
Default rule
POST
Thank you.
Philippe.
philgood031