email config question

Hi,

This is my situation...


Imagine 2 dedicated servers owned by 2 different companies but colocated in the same DC

DC operates using internal IP range that is then translated to the outside world via the firewall/router


so sendmail/apache etc etc listen on internal IP's eg 10.0.0.1

I want to send from the one server to the other's mail server

10.0.0.1 > 10.0.0.2 for example

but I can only refer to them using their DNS name example mail.server.com

This therefore means the email can not be sent, example error is

Deferred: Connection timed out with server.com

...

Any one have an idea on how to sort this

the system is running redhat 7.2

Thanks

 

 

 

 

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