[Discuss] email bounce issue

[Chandler, Scott]

We recently acquired part of another company. During the transition, I need to allow email through my Internet facing Linux email gateway from a specific host in the old company. This host was originally intended to be internal use only so there is no MX record. When the system sends a message into my environment, they get this reply:

450 4.1.8 sender address rejected domain not found

Is there a way, on my system that I can tell postfix to accept mail from this host and or domain even though it has no MX record?

TIA
Scott

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