Nigel Metheringham edited this page Nov 29, 2012 · 2 revisions



How can I lookup data from a single file using both single IP addresses and IP address blocks as keys? I want to set smtp_accept_max_per_host by this means, and also include a default.


You cannot do this in a single lookup, because you need separate lookups for individual addresses and address blocks. However, these lookups can be nested in a single expansion string. For example, suppose you are using an lsearch file with entries like this:    4  2
*:                1

You can use this setting:

smtp_accept_max_per_host = \

Note that the first lookup does not have an asterisk on the search type. If you have blocks of different sizes (/24, /26, etc) you have to configure it to do a separate lookup for each size, with just the final one using a default.

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