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authorPhil Pennock <pdp@exim.org>2011-03-22 09:37:32 -0400
committerPhil Pennock <pdp@exim.org>2011-03-22 09:37:32 -0400
commite97d1f088ab357d806bff8b7d5f3fce068a85989 (patch)
treeb1d5e77b34c176b8c11feacd28db68ebcf6c74e1 /doc/doc-docbook
parent0e944a0d8501ebf6ff71c652a48bd38b984f4450 (diff)
Added dns_use_edns0 main option.
Is int because need a "do not override default" option, but that stops us from using the bool expansion logic and so we need to explicitly set numbers. Should try to find a way around that.
Diffstat (limited to 'doc/doc-docbook')
-rw-r--r--doc/doc-docbook/spec.xfpt14
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 0ea36fa50..5cfa344c0 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -12669,6 +12669,7 @@ See also the &'Policy controls'& section above.
.row &%dns_ipv4_lookup%& "only v4 lookup for these domains"
.row &%dns_retrans%& "parameter for resolver"
.row &%dns_retry%& "parameter for resolver"
+.row &%dns_use_edns0%& "parameter for resolver"
.row &%hold_domains%& "hold delivery for these domains"
.row &%local_interfaces%& "for routing checks"
.row &%queue_domains%& "no immediate delivery for these"
@@ -13301,6 +13302,19 @@ to set in them.
See &%dns_retrans%& above.
+.new
+.option dns_use_edns0 main integer -1
+.cindex "DNS" "resolver options"
+.cindex "DNS" "EDNS0"
+If this option is set to a non-negative number then Exim will initialise the
+DNS resolver library to either use or not use EDNS0 extensions, overriding
+the system default. A value of 0 coerces EDNS0 off, a value of 1 coerces EDNS0
+on.
+
+If the resolver library does not support EDNS0 then this option has no effect.
+.wen
+
+
.option drop_cr main boolean false
This is an obsolete option that is now a no-op. It used to affect the way Exim
handled CR and LF characters in incoming messages. What happens now is