I have multiple domains setup with Postfix and I have different users in each domain for now.

I am using RoundCube for Webmail and have "mail.mydomain.com" listed as the default, and only, host.

Now if I enter a user in a different domain, "mail.wrongdomain.com", that user can login and see their email.

Ideally, I'd like to see "username does not exist"....or some other such response which is what I expected.

I was told it's an authentication issue and wanted to see what option I have with dbmail....(if it not please let me know)

Can someone list the options available?

dbmail-2.0.10
Postfix 2.2.3

Jim


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