Network Administrator

i have a problem in sending and receiveing mails
my scenario i have sonicwall firewall and sonicwall email security all my mails go through email security
 i have my exchange 2007 server published on sonicwall firewall email getway is sonicwall email security.
 now i have installed exchange 2013 coexist. If i send and receive a mail from exchange 2007 it works fine normally.
when i publish my exchange 2013 server and try to send and receive mail it delays for 4 hour
please anyone help me out with this problem.
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Jian An LimSolutions ArchitectCommented:
if you have the delay message, check the message header to find out where the mail DELAY at.
this give you some clear indication which part goes wrong.
then read through logs on that node to see what's going wrong.

in a nutshell, it should work but something might happen at sonicwall email security (not very sure it is a PROXY or MTA type)

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