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.