Activesync - Error 405 (HTTP verb)

david spen

New member
Oct 15, 2018
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Szenario: one Ex2007 (MB,CAS) in AD-Site 1 a second Ex2007 (MB,CAS) in another AD-Site 2.
Exchange is published over ISA2006.
OWA works fine for Mailboxes on Server 1 and Server 2 (using CAS-proxying).

ActiveSync works fine for mailboxes homed on Ex in site 1 (with internet-access). Mailboxes homed on Ex in site 2 are not reachable by ActiveSync (error-code on mobile: 0x85010014), the browser-test gives http-error 405 (HTTP verb used to access this page is not allowed) back.
Integrated Authetication and FBA is enabled.

Any Ideas?