Cant access ECP or EAC on new Exchange 2013 Mailbox role deployment

Kissel-B
Kissel-B used Ask the Experts™
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I am starting to migrate our Exchange 2010 system to Exchange 2013.  Currently we have two 2010 mailbox roles servers and two 2010 CAS servers.  I followed the migration guide I installed a 2013 mailbox role server and a 2013 CAS server.  On the mailbox role I can not access EAC or ECP.  I always get a 404.0 not found if i try the https://servername:444/ecp I get a 400 bad request error.  I have tried multiple solutions found online but no joy.  The Exchange management shell seems to be working correctly and if I log into the 2013 Cas server admin console it works and sees the 2010 and 2013 mailbox roles any ideas?
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Architect/Designer
Commented:
That's expected as the ECP/EAP roles reside on the CAS server, not the mailbox server.

Author

Commented:
So I shouldn't worry about and either do the administration from the CAS EAC?
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017
Commented:
Can you open using the CAS server IP?
If yes that is expected.
https://<cas-serverIP>/ecp/?ExchClientVer=15

Author

Commented:
Yes no issues from the CAS server.  That's for the help have been racking my brain.

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