2 Domains / gateway mode
1. x.x.x.x --> mx = smtp.domaina.com
2. z.z.z.z --> mx = smtp.domainb.com
I have configured my firewall to NAT traffic to port 25 to Fortimail so the incoming mails to be checked from fortimail.
Also i configured fortimail to forward mails to my 2 internal mail servers, servera for domaina.com and serverb for domainb.
So all incoming traffic is ok. Also any internal mail traffic is ok.
My question is about outgoing traffic.
I configured fortimail to internet traffic throw one vip. So any mail from domaina.com or domainb.com goes throw one vip. Assuming i choose x.x.x.x ip for outgoing traffic, mails from domainb are characterized as spam because there are getting out from wrong ip.
Is there a way to configure fortimail sending mails from domaina.com throw x.x.x.x and mails from domainb.com throw z.z.z.z?
Network Engineer/IT Administrator