Team, in our infra Exchange 2013 CU8 & Exchange 2007 SP3 RU15 running. Exchange 2013 recently deployed but while opening exchange 2007 users mailbox through 2013 OWA getting error "Redirection loop detected". Want to update you few things :

Public DNS record created as mail.myinfra.in with x.x.x.2 IP and legacy.myinfra.in with x.x.x.3 IP.

Virtual directory modified mail.myinfra.in for 2013 & legacy.myinfra.in for 2007.

All the OWA request need to pass through public DNS only no internal DNS record for OWA.

Through ISA already rule created and tested also like https://mail.myinfra.in/owa giving me 2013 OWA page & https://legacy.myinfra.in/owa giving 2007 owa page. Only problem while opening https://mail.myinfra.in/owa with 2013 mailbox id/pwd working fine but with 2007 mailbox id/pwd giving error "Redirection loop detected".

Appreciate if you can help quickly.

Hello

tip: check iis log on both of exch servers and check  owa  application haven't got "HTTP redirect" enabled.

Got issue it was some rule issue from ISA server. Done the changes in ISA and then started working fine.

• Marked as answer by Jha Chandan 1 hour 28 minutes ago