Exchange 2007 – 2013 Co-Exist

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    Hi all,

    i’m in the middle of migrating to exchange 2013 from exchange 2007.
    I have a problem to send emails from exchange 2013 to exchange 2007 but emails from exchange 2007 to exchange 2013 is working fine and
    * i add the exchange 2013 to the exist send connector on the exchange 2007
    * both exchange servers have the same public wild card certificate
    * external emails are still routed to exchange 2007 from the firewall
    * i have a smart host and i enable exchange 2013 on it
    * also enable the exchange 2013 on the fire wall for port 25
    * i receive this error on the 2013 queue viewer:
    441 4.4.1 Error encountered while communicating with primary target IP address: “”Failed to connect. Winsock error code: 10049, Win32 error code: 10049.”” Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts. The last endpoint attempted was exchange 2007 IP:25};{FQDN=Exchange 2007};{IP=exchange 2007}]”

    Please help

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