Support /defer_ok on verify=reverse_host_lookup. Bug 344

[users/jgh/exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index d5a16cacc2eebf93d37f92d4dad8656516b2c86f..77d966d6df2cd82aed58bb65361d73eee1506c12 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -28824,7 +28824,7 @@ verified is redirected to a single address, verification continues with the new
 address, and in that case, the subsequent value of &$address_data$& is the
 value for the child address.
 
 address, and in that case, the subsequent value of &$address_data$& is the
 value for the child address.
 

-.vitem &*verify&~=&~reverse_host_lookup*&
+.vitem &*verify&~=&~reverse_host_lookup/*&<&'options'&>

 .cindex "&%verify%& ACL condition"
 .cindex "&ACL;" "verifying host reverse lookup"
 .cindex "host" "verifying reverse lookup"
 .cindex "&%verify%& ACL condition"
 .cindex "&ACL;" "verifying host reverse lookup"
 .cindex "host" "verifying reverse lookup"


@@ -28835,6 +28835,9 @@ Verification ensures that the host name obtained from a reverse DNS lookup, or
 one of its aliases, does, when it is itself looked up in the DNS, yield the
 original IP address.
 
 one of its aliases, does, when it is itself looked up in the DNS, yield the
 original IP address.
 

+There is one possible option, &`defer_ok`&.  If this is present and a
+DNS operation returns a temporary error, the verify condition succeeds.
+

 If this condition is used for a locally generated message (that is, when there
 is no client host involved), it always succeeds.
 
 If this condition is used for a locally generated message (that is, when there
 is no client host involved), it always succeeds.