Currently, I have a client for whom our company provides IT consulting service. I have set up a distribution list on their Exchange server for alerts during their maintenance periods. This distribution list has an address of maint@client.com. I can configure it to only allow e-mail from our support address (support@consultant.com). However, I'd like for all of our techs to be able to send e-mail to this address (e.g. tech1@consultant.com, tech2@consultant.com, etc.). Is there a way to allow only a messages from a specific domain to be received by mailbox?

hi, If you have any update, please post here. If your issue is fixed, please remember to mark as answer. hope can help you thank,CastinLu TechNet Community Support