Merge branch 'master' of ssh://git.exim.org/home/git/exim

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index f7636f85a3f2b9be758fd0c93dd3aba0b5a39797..86090290bffd91218f1aec30ea426401e4db30d5 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -8298,7 +8298,14 @@ Both &`+include_unknown`& and &`+ignore_unknown`& may appear in the same
 list. The effect of each one lasts until the next, or until the end of the
 list.
 
-To explain the host/ip processing logic a different way for the same ACL:
+.new
+.section "Mixing wildcarded host names and addresses in host lists" &&&
+         "SECTmixwilhos"
+.cindex "host list" "mixing names and addresses in"
+
+This section explains the host/ip processing logic with the same concepts
+as the previous section, but specifically addresses what happens when a
+wildcarded hostname is one of the items in the hostlist.
 
 .ilist
 If you have name lookups or wildcarded host names and
@@ -8327,7 +8334,7 @@ If the first &%accept%& fails, Exim goes on to try the second one. See chapter
 &`+ignore_unknown`&, which was discussed in depth in the first example in
 this section.
 .endlist
-
+.wen
 
 
 .section "Temporary DNS errors when looking up host information" &&&
@@ -8399,33 +8406,6 @@ See section &<<SECThoslispatsikey>>&.)
 
 
 
-.section "Mixing wildcarded host names and addresses in host lists" &&&
-         "SECTmixwilhos"
-.cindex "host list" "mixing names and addresses in"
-If you have name lookups or wildcarded host names and IP addresses in the same
-host list, you should normally put the IP addresses first. For example, in an
-ACL you could have:
-.code
-accept hosts = 10.9.8.7 : *.friend.example
-.endd
-The reason for this lies in the left-to-right way that Exim processes lists.
-It can test IP addresses without doing any DNS lookups, but when it reaches an
-item that requires a host name, it fails if it cannot find a host name to
-compare with the pattern. If the above list is given in the opposite order, the
-&%accept%& statement fails for a host whose name cannot be found, even if its
-IP address is 10.9.8.7.
-
-If you really do want to do the name check first, and still recognize the IP
-address, you can rewrite the ACL like this:
-.code
-accept hosts = *.friend.example
-accept hosts = 10.9.8.7
-.endd
-If the first &%accept%& fails, Exim goes on to try the second one. See chapter
-&<<CHAPACL>>& for details of ACLs.
-
-
-
 
 
 .section "Address lists" "SECTaddresslist"