Hi All,
Wonder if anyone can shed any light on this one.
We have two CAS Arrays in different sites, 2 Exchange Servers, one in each site and a DAG between them.
The DAG works beautifully, as found out recently when the main database failed over to the second site.
All outlook clients are working great, the problem I am having is with users who access their mail via IMAP.
Scenario:
Users access IMAP via the CAS Array, when they try and access their mailbox which is now currently in a different site, the CAS attempts to proxy the request to the remote site, unfortunately, it's attempting to proxy the request to the Mailbox server and not the remote CAS array.
So, the main cas array is cas-array-sot.gresh.local, the remote one in a different site is cas-array-lon.gresh.local, Mailbox Server is main site is exch01-uk.gresh.local and the one in the remote site is exch02-uk.gresh.local
What I'm seeing in the log is this:
2012-10-11T09:48:03.657Z,0000000000000086,4,192.168.150.23:143,192.168.150.68:49855,,6846,31,30,authenticate,plain,"R=""4 NO AUTHENTICATE failed."";LdapC=3;LdapL=16;Msg=""User:Chris Priest:xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx:MDB1:EXCH02-UK.gresh.local;Proxy:EXCH02 UK.gresh.local:993:SSL;Failed"";Excpt=""No connection could be made because the target machine actively refused it 192.168.165.20:993-SocketException"""
So, as you can see, it's attempt to proxy the request to the Mailbox server rather than the CAS Array.
Does anyone have any thoughts on this?
Best Regards
Chris