Temporarily suspend email reception for one domain in a tenant, without non-delivery?

[DanielHuberICX]

I have a tenant with several domains. I need to move one of those domains to another tenant. 

During that move, I like to temporaily hold the reception of emails to that domain, for about an hour or so, without generating non-delivery reports for the senders.

Incoming emails would just be delayed until I re-enable reception/delivery. 

How could this be done? 

Thanks

Daniel

[#2 · Accepted solution]

Hmm, ill guess you can first lower the TTL of the MX then change the MX to something random ( no existing MX )
It Will then try again to deliver the messages! Hopefully the domain transfer is done by then..
There are third party solutions caching mails as well but often not needed! Make sure to do the transfer during weekend or late Out of office hours!
Read more here as well:

https://www.quadrotech-it.com/blog/handling-email-domains-during-an-office-365-tenant-migration-part...

Adam

[#3]

Hello @adam deltinger,

This is a great pointer you gave me.

I will try the MX record trick. Cool!

Daniel