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| author | Jeremy Harris <jgh146exb@wizmail.org> | 2020-05-16 19:30:37 +0100 |
|---|---|---|
| committer | Jeremy Harris <jgh146exb@wizmail.org> | 2020-05-17 01:15:22 +0100 |
| commit | 3db72f4b639a64cacf152e4f7718a18581426b10 (patch) | |
| tree | 8b555dca8fef2a35238cd6f4b91796d643a09132 /doc/doc-docbook | |
| parent | 618f89bfd392ed2094889bb5d4c6d734bcc72b03 (diff) | |
Lookups: cache=no_rd option. Bug 1751
Diffstat (limited to 'doc/doc-docbook')
| -rw-r--r-- | doc/doc-docbook/spec.xfpt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index b4d4232e0..a1f361339 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -6668,6 +6668,18 @@ If the value of &$sender_host_address$& is 192.168.5.6, expansion of the first &%domains%& setting above generates the second setting, which therefore causes a second lookup to occur. +.new +The lookup type may optionally be followed by a comma +and a comma-separated list of options. +Each option is a &"name=value"& pair. +Whether an option is meaningful depands on the lookup type. + +All lookups support the option &"cache=no_rd"&. +If this is given then the cache that Exim manages for lookup results +is not checked before diong the lookup. +The result of the lookup is still written to the cache. +.wen + The rest of this chapter describes the different lookup types that are available. Any of them can be used in any part of the configuration where a lookup is permitted. @@ -6685,6 +6697,13 @@ lookup to succeed. The lookup type determines how the file is searched. .new .cindex "tainted data" "single-key lookups" The file string may not be tainted + +All single-key lookups support the option &"ret=key"&. +If this is given and the lookup +(either underlying implementation or cached value) +returns data, the result is replaced with a non-tainted +version of the lookup key. +.cindex "tainted data" "de-tainting" .wen .next .cindex "query-style lookup" "definition of" |