Zimbra sends but does not receive

Hello,

I have downloaded a "turnkey"virtual machine containing a Zimbra installation.

I all went smooth and I am using Zimbra for the first time.
Although, after installation finished, I saw that there was a pre-configured domain "example.com" and a pre-configured server "mail.example.com".

I was able to add a domain "vpoffices.com.br" but I was not able to change the SMTP server to "mail2.vpoffices.com.br"

This is giving me a reverse DNS error on MXtoolbox saying that the Reverse DNS does not match SMTP Banner.

I think this could be the reason for not receiving any emails and not seeing any errors when sending.

Can someone please help me diagnose this problem?

Thank you,
Renato Rodrigues

Ok,

I have solved this by running the initial configurations script as written on the turnkey appliance page.