Hello,
Mail flow between Exchange 2010 sp3 & Exchange 2013 SP1 (update Cu5) not working.
Exchange 2013 setup is Exchange 2013 sp1 DVD
Exchange 2010 when sending mail to external it's ok.
Exchange 2010 when sending mail to exchange 2010 users it's ok.
Exchange 2013 when sending mail to External it's ok.
Exchange 2013 when sending mail to exchange 2010 users it's ok.
or
Exchange 2010 when sending mail to exchange 2013 not working
Exchange 2013 when sending mail to Exchange 2013 not working
From internet --> SMTP GW (exh edge) --> Exchange 2010 it's ok
From Internet --> SMTP GW (exh edge) --> Exchange 2013 not working.
organization;
1 AD site and 1 PDC (2012 R2) + 3 DC (1x 2008 R2 + 2 x 2003 Server) (Windows Server 2003 domain fl)
With Exchange 2010 exchange 2013 on the same subnet. Exchange 2010 physical machine, Exchange 2013 physical machine ( eth Microsoft Team Server 2012 R2 )
All server is region setting Turkey
.
Exchange 2010 error
451 4.7.0 Temporary server error. Please try again later. PRX4
Exchange 2013 error
451 4.4.0 primary target ip address responded with 501 5.5.4 Invalid arguments. attempted failover to alternative host, but that did not succeed. either there are no alternate host, or delivery failed to all alternate hosts. Th
thanks