SMTP entries do not flow
Learn how to use SMTP domains to ensure seamless email communication across domains.
Written by Neil Langston
Updated at May 22nd, 2025
If you find SMTP domains are not flowing from source to target in an attribute like proxyaddresses, you need to add the domains into “SMTP Domains”.
If your smtp domain is not listed it will not flow.
One exception is that the mail attribute will always become the primary SMTP entry in proxyAddresses.
Domains are removed before mappings.
Here it is empty
With some entries
