SMTP Error (450): Failed to add recipient “example@gmail.com”

[athussien]

Full error:

Code:

SMTP Error (450):  Failed to add recipient "example@gmail.com"


(4.1.1 <example@gmail.com>: Recipient address rejected:

User unknown in virtual mailbox table).

Alright so this is a bit different from those posted on here.
I found out by mistake that I had gmail.com added in my panel (Sentora ZPanel) as a domain. So I understood the issue, the postfix running on Centos 7 tries to send an email to any gmail address but since he got the domain registered in the server, he thinks that he's the gmail server and hence returns this error since he doesn't find the addresses registered on this server.
So I removed the domain, deleted all the directories that had "gmail" in it rebooted, cleared cache but still with no luck. Actually the 

Code:

"locate"

 command still fetched the gmail folders even though they don't exist anymore. So I ran [/size][/size]

Code:

"updatedb"

 and now 

Code:

"locate gmail"

 only shows the error logs but unfortunately the issue still exists.
My question is, how to convince my server that he no longer has gmail.com registered inside it and that it should start looking outside to deliver the mails?

[Me.B]

Postfix domains are in sentora_postfix db not in system files.

M B