Marcus: > What are the benefits of socketmap (postfix 2.10+) vs tcp_table?
tcp_table is Postfix-only. socketmap also works with Sendmail, and is a better protocol. > And can I use socketmap with sender_dependent_default_transport_maps ? You can use any Postfix table-driven feature with socketmap, as long as that feature is not security-sensitive (for example it is OK for access maps and routing, but it can't be used for local aliases because they may contain shell commands, and it can't be used for virtual uid/gid maps which specify execution privileges). > I'm struggling to understand the what the documentation of socketmap > refers to "name" and the response's format. Any tips? The socketmap protocol requires that each query specifies a name. I suppose the idea is that one socketmap server can answer queries for databases with different names. Wietse