0

I have searched in google before asking here. I got a mixed answer in google.

Can i have a multiple MX record from different mail providers?

Example,

Zoho Mail

user1@example.com 
user2@example.com

Google Webmail

user3@example.com
user4@example.com

Rediffmail business

user5@example.com
user6@example.com

Is this possible?

Mehul Kumar
  • 169
  • 2

2 Answers2

2

MX records govern where external senders should route the messages for a particular domain, not a specific mailbox in that domain. So no, you can't use MX records for that.

But some mail providers do offer a configuration where, when they are the MX record for your domain example.com, they will accept all mail for @example.com and will:

  • deliver locally the messages to mailboxes for the users/aliases created with them
  • forward all messages for the users/aliases not created with them, in other words: for all unknown e-mail addresses, to another mail server.

That is a typical solution when some mailboxes are in the cloud and others on an on-premise mail server. For example: https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/set-up-connectors-to-route-mail

The challenge there is that all mail providers/servers you select will need to support that feature. Otherwise you run the risk that while for example user1@example.com (at zoho) can successfully send an e-mail to user5@example.com (at Rediffmail), the reply from user5 will fail with an error message "No mailbox for user1@example.com exists" because that mailbox does not exist with Rediffmail and Rediffmail is unaware that @example.com mailboxes can exist elsewhere

diya
  • 1,771
  • 3
  • 14
0

Shart answer: No. MX records are highlanders. There can only be one (target), not servers for domains.

A DNS zone for a MTA ISP with 300k mailboxes would potentially be VERY LARGE otherwise.

bjoster
  • 4,805
  • 5
  • 25
  • 33