I have a zimbra server running perfectly, now we have a webserver on the same network where zimbra server is already running.

Now the issue is that there are several php mail program that send mail to some reporting users.

Now i want that when these php program send mails to reporting users these mails must be mailed by zimbra server.

Can anybody provide me the setup to solve this. I have local postfix running on the webserver but mails from this server goes into the spam of the user so I want that the mails must be mailed by using zimbra server.

What I need to do on webserver as well as zimbra server ?

Thanks & Regards