I am trying to setup some email forwards in Postfix using virutal_alias_maps and an LDAP looking.

My first attempt looked up the user part using:

query_filter = (&(objectClass=PostfixBookMailForward)(uid=%u))

But this failed spectacularly because it would not only re-write bob@example.com but also bob@other.tld and bob@ every domain.

So my question is fairly simple. Is there a way to limit an LDAP query, or limit postfix to only lookup addresses for a subset of domains?

Is my only option to add domain information to every user record in LDAP?

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