multiple domains

[Fullmoon]

Dear Gurus,

Anyone could share their expertise on how to achieve this goal. We have a working email using single domain (abc.com). Now our company introduce new domain (xyz.com) which resides on different public add. mail.abc.com domain is intended for corporate users while mail.xyz.com domain is intended for outsource personnel.

Please see diagram as reference.

FML settings are the ff. Mail settings hostname is pointed to mail domain: abc.com email users uses email server private ip/fqdn as smtp server for abc.com domain.

I am aware that I need to have 2 VIPs in my FGs pointing to FML IP, but on the FMl settings im bit skeptical on what to do. What would be my hostname looks like since i have 2 domains already? Does it resolved to correct ip if i ping or do nslookup mail.abc.com or mail.xyz.com Can I simply add xyz.com under Domain settings and point the host to my existing email server? What would be the smtp server settings of my email user resides on xyz.com domain?

Any insights is deeply appreciated.

[R_F]

Anyone have an idea on how FML will handle multiple domains based on the above topology?

appreciate any guidance.

[sw2090]

the FML has to know the domain. Otherwise it would defer incoming/outgoing mail to/from that domain that reaches the FML.

For external incoming mail the DNS settings must be correct. There must be an MX Record (otherwise the first A record is used) and it should also have SPF and DKIM/DMARC Records.

We have multiple domains on our FML and all incoming/outgoing mail for these has to pass the FML. Works fine this way.