Tag: Primary SMTP address

Microsoft 365 makes it easy to remove domains. However, if you remove a domain and don’t adjust email proxy addresses, some fix-up might be needed to make sure that mail-enabled objects don’t have primary SMTP addresses or proxy addresses that use the removed domains. This article explains how to fix up mail-enabled objects with PowerShell to remove traces of any removed domains.

Like any mail-enabled object managed by Exchange Online, distribution list proxy addresses determine if Exchange can deliver messages to an object. Sometimes the proxy addresses aren’t correct or need adjustment, such as in the case when an organization wants to make sure that all distribution lists have primary SMTP addresses from a specific domain. This article explains how to use PowerShell to adjust the primary SMTP address when necessary.